English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

sqrt(cos^2(x)+1/2)+sqrt(sin^2(x)+1/2)=2

Solución

cos^{2} (x) + \frac{1}{2} + sin^{2} (x) + \frac{1}{2} = 2

Solución

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn, x = \frac{5 π}{4} + 2 πn, x = \frac{7 π}{4} + 2 πn

Grados

x = 4 5^{\circ} + 36 0^{\circ} n, x = 13 5^{\circ} + 36 0^{\circ} n, x = 22 5^{\circ} + 36 0^{\circ} n, x = 31 5^{\circ} + 36 0^{\circ} n

Pasos de solución

cos^{2} (x) + \frac{1}{2} + sin^{2} (x) + \frac{1}{2} = 2

Restar

2

de ambos lados

\frac{2 cos ^{2} ( x ) + 1}{2} + \frac{2 sin ^{2} ( x ) + 1}{2} - 2 = 0

Re-escribir usando identidades trigonométricas

- 2 + \frac{1 + 2 cos ^{2} ( x )}{2} + \frac{1 + 2 sin ^{2} ( x )}{2}

Utilizar la identidad pitagórica:

cos^{2} (x) + sin^{2} (x) = 1

cos^{2} (x) = 1 - sin^{2} (x)

= - 2 + \frac{1 + 2 ( 1 - sin ^{2} ( x ) )}{2} + \frac{1 + 2 sin ^{2} ( x )}{2}

Expandir

1 + 2 (1 - sin^{2} (x)) : - 2 sin^{2} (x) + 3

1 + 2 (1 - sin^{2} (x))

Expandir

2 (1 - sin^{2} (x)) : 2 - 2 sin^{2} (x)

2 (1 - sin^{2} (x))

Poner los parentesis utilizando:

a (b - c) = ab - a c

a = 2, b = 1, c = sin^{2} (x)

= 2 \cdot 1 - 2 sin^{2} (x)

Multiplicar los numeros:

2 \cdot 1 = 2

= 2 - 2 sin^{2} (x)

= 1 + 2 - 2 sin^{2} (x)

Sumar:

1 + 2 = 3

= - 2 sin^{2} (x) + 3

= - 2 + \frac{- 2 sin ^{2} ( x ) + 3}{2} + \frac{1 + 2 sin ^{2} ( x )}{2}

- 2 + \frac{1 + 2 sin ^{2} ( x )}{2} + \frac{3 - 2 sin ^{2} ( x )}{2} = 0

Usando el método de sustitución

- 2 + \frac{1 + 2 sin ^{2} ( x )}{2} + \frac{3 - 2 sin ^{2} ( x )}{2} = 0

Sea:

sin (x) = u

- 2 + \frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} = 0

- 2 + \frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} = 0 : u = \frac{1}{2}, u = - \frac{1}{2}

- 2 + \frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} = 0

Eliminar raíces cuadradas

- 2 + \frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} = 0

Sumar

2

a ambos lados

- 2 + \frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} + 2 = 0 + 2

Simplificar

\frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} = 2

Restar

\frac{3 - 2 u ^{2}}{2}

de ambos lados

\frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} = 2 - \frac{3 - 2 u ^{2}}{2}

Simplificar

\frac{1 + 2 u ^{2}}{2} = 2 - \frac{3 - 2 u ^{2}}{2}

Elevar al cuadrado ambos lados:

\frac{1 + 2 u ^{2}}{2} = 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

- 2 + \frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} = 0

(\frac{1 + 2 u ^{2}}{2})^{2} = (2 - \frac{3 - 2 u ^{2}}{2})^{2}

Desarrollar

(\frac{1 + 2 u ^{2}}{2})^{2} : \frac{1 + 2 u ^{2}}{2}

(\frac{1 + 2 u ^{2}}{2})^{2}

Aplicar las leyes de los exponentes:

a = a^{\frac{1}{2}}

= ((\frac{1 + 2 u ^{2}}{2})^{\frac{1}{2}})^{2}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= (\frac{1 + 2 u ^{2}}{2})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{1 + 2 u ^{2}}{2}

Desarrollar

(2 - \frac{3 - 2 u ^{2}}{2})^{2} : 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

(2 - \frac{3 - 2 u ^{2}}{2})^{2}

Aplicar la formula del binomio al cuadrado:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

a = 2, b = \frac{3 - 2 u ^{2}}{2}

= 2^{2} - 2 \cdot 2 \frac{3 - 2 u ^{2}}{2} + (\frac{3 - 2 u ^{2}}{2})^{2}

Simplificar

2^{2} - 2 \cdot 2 \frac{3 - 2 u ^{2}}{2} + (\frac{3 - 2 u ^{2}}{2})^{2} : 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

2^{2} - 2 \cdot 2 \frac{3 - 2 u ^{2}}{2} + (\frac{3 - 2 u ^{2}}{2})^{2}

2^{2} = 4

2^{2}

2^{2} = 4

= 4

2 \cdot 2 \frac{3 - 2 u ^{2}}{2} = 4 \frac{3 - 2 u ^{2}}{2}

2 \cdot 2 \frac{3 - 2 u ^{2}}{2}

Multiplicar los numeros:

2 \cdot 2 = 4

= 4 \frac{3 - 2 u ^{2}}{2}

(\frac{3 - 2 u ^{2}}{2})^{2} = \frac{3 - 2 u ^{2}}{2}

(\frac{3 - 2 u ^{2}}{2})^{2}

Aplicar las leyes de los exponentes:

a = a^{\frac{1}{2}}

= ((\frac{3 - 2 u ^{2}}{2})^{\frac{1}{2}})^{2}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= (\frac{3 - 2 u ^{2}}{2})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{3 - 2 u ^{2}}{2}

= 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

= 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

\frac{1 + 2 u ^{2}}{2} = 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

\frac{1 + 2 u ^{2}}{2} = 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

Restar

\frac{3 - 2 u ^{2}}{2}

de ambos lados

\frac{1 + 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} = 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2}

Simplificar

\frac{1 + 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} = 4 - 4 \frac{3 - 2 u ^{2}}{2}

Restar

4

de ambos lados

\frac{1 + 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} - 4 = 4 - 4 \frac{3 - 2 u ^{2}}{2} - 4

Simplificar

\frac{1 + 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} - 4 = - 4 \frac{3 - 2 u ^{2}}{2}

Elevar al cuadrado ambos lados:

4 u^{4} - 20 u^{2} + 25 = 8 (- 2 u^{2} + 3)

\frac{1 + 2 u ^{2}}{2} = 4 - 4 \frac{3 - 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2}

(\frac{1 + 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} - 4)^{2} = (- 4 \frac{3 - 2 u ^{2}}{2})^{2}

Desarrollar

(\frac{1 + 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} - 4)^{2} : 4 u^{4} - 20 u^{2} + 25

(\frac{1 + 2 u ^{2}}{2} - \frac{3 - 2 u ^{2}}{2} - 4)^{2}

Combinar las fracciones usando el mínimo común denominador:

\frac{1 + 2 u ^{2} - ( 3 - 2 u ^{2} )}{2}

Aplicar la regla

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{1 + 2 u ^{2} - ( - 2 u ^{2} + 3 )}{2}

= (\frac{2 u ^{2} - ( - 2 u ^{2} + 3 ) + 1}{2} - 4)^{2}

\frac{1 + 2 u ^{2} - ( 3 - 2 u ^{2} )}{2} = 2 u^{2} - 1

\frac{1 + 2 u ^{2} - ( 3 - 2 u ^{2} )}{2}

Expandir

1 + 2 u^{2} - (3 - 2 u^{2}) : 4 u^{2} - 2

1 + 2 u^{2} - (3 - 2 u^{2})

- (3 - 2 u^{2}) : - 3 + 2 u^{2}

- (3 - 2 u^{2})

Poner los parentesis

= - (3) - (- 2 u^{2})

Aplicar las reglas de los signos

- (- a) = a, - (a) = - a

= - 3 + 2 u^{2}

= 1 + 2 u^{2} - 3 + 2 u^{2}

Simplificar

1 + 2 u^{2} - 3 + 2 u^{2} : 4 u^{2} - 2

1 + 2 u^{2} - 3 + 2 u^{2}

Agrupar términos semejantes

= 2 u^{2} + 2 u^{2} + 1 - 3

Sumar elementos similares:

2 u^{2} + 2 u^{2} = 4 u^{2}

= 4 u^{2} + 1 - 3

Sumar/restar lo siguiente:

1 - 3 = - 2

= 4 u^{2} - 2

= 4 u^{2} - 2

= \frac{4 u ^{2} - 2}{2}

Factorizar

4 u^{2} - 2 : 2 (2 u^{2} - 1)

4 u^{2} - 2

Reescribir como

= 2 \cdot 2 u^{2} - 2 \cdot 1

Factorizar el termino común

2

= 2 (2 u^{2} - 1)

= \frac{2 ( 2 u ^{2} - 1 )}{2}

Dividir:

\frac{2}{2} = 1

= 2 u^{2} - 1

= (2 u^{2} - 1 - 4)^{2}

Restar:

- 1 - 4 = - 5

= (2 u^{2} - 5)^{2}

Aplicar la formula del binomio al cuadrado:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

a = 2 u^{2}, b = 5

= (2 u^{2})^{2} - 2 \cdot 2 u^{2} \cdot 5 + 5^{2}

Simplificar

(2 u^{2})^{2} - 2 \cdot 2 u^{2} \cdot 5 + 5^{2} : 4 u^{4} - 20 u^{2} + 25

(2 u^{2})^{2} - 2 \cdot 2 u^{2} \cdot 5 + 5^{2}

(2 u^{2})^{2} = 4 u^{4}

(2 u^{2})^{2}

Aplicar las leyes de los exponentes:

(a \cdot b)^{n} = a^{n} b^{n}

= 2^{2} (u^{2})^{2}

(u^{2})^{2} : u^{4}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= u^{2 \cdot 2}

Multiplicar los numeros:

2 \cdot 2 = 4

= u^{4}

= 2^{2} u^{4}

2^{2} = 4

= 4 u^{4}

2 \cdot 2 u^{2} \cdot 5 = 20 u^{2}

2 \cdot 2 u^{2} \cdot 5

Multiplicar los numeros:

2 \cdot 2 \cdot 5 = 20

= 20 u^{2}

5^{2} = 25

5^{2}

5^{2} = 25

= 25

= 4 u^{4} - 20 u^{2} + 25

= 4 u^{4} - 20 u^{2} + 25

Desarrollar

(- 4 \frac{3 - 2 u ^{2}}{2})^{2} : 8 (- 2 u^{2} + 3)

(- 4 \frac{3 - 2 u ^{2}}{2})^{2}

Aplicar las leyes de los exponentes:

(- a)^{n} = a^{n},

n

es par

(- 4 \frac{3 - 2 u ^{2}}{2})^{2} = (4 \frac{3 - 2 u ^{2}}{2})^{2}

= (4 \frac{3 - 2 u ^{2}}{2})^{2}

Aplicar las leyes de los exponentes:

(a \cdot b)^{n} = a^{n} b^{n}

= 4^{2} (\frac{3 - 2 u ^{2}}{2})^{2}

(\frac{3 - 2 u ^{2}}{2})^{2} : \frac{3 - 2 u ^{2}}{2}

Aplicar las leyes de los exponentes:

a = a^{\frac{1}{2}}

= ((\frac{3 - 2 u ^{2}}{2})^{\frac{1}{2}})^{2}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= (\frac{3 - 2 u ^{2}}{2})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{3 - 2 u ^{2}}{2}

= 4^{2} \frac{3 - 2 u ^{2}}{2}

4^{2} = 16

= 16 \frac{3 - 2 u ^{2}}{2}

Simplificar

= 8 (- 2 u^{2} + 3)

4 u^{4} - 20 u^{2} + 25 = 8 (- 2 u^{2} + 3)

4 u^{4} - 20 u^{2} + 25 = 8 (- 2 u^{2} + 3)

4 u^{4} - 20 u^{2} + 25 = 8 (- 2 u^{2} + 3)

Resolver

4 u^{4} - 20 u^{2} + 25 = 8 (- 2 u^{2} + 3) : u = \frac{1}{2}, u = - \frac{1}{2}

4 u^{4} - 20 u^{2} + 25 = 8 (- 2 u^{2} + 3)

Desarrollar

8 (- 2 u^{2} + 3) : - 16 u^{2} + 24

8 (- 2 u^{2} + 3)

Poner los parentesis utilizando:

a (b + c) = ab + a c

a = 8, b = - 2 u^{2}, c = 3

= 8 (- 2 u^{2}) + 8 \cdot 3

Aplicar las reglas de los signos

+ (- a) = - a

= - 8 \cdot 2 u^{2} + 8 \cdot 3

Simplificar

- 8 \cdot 2 u^{2} + 8 \cdot 3 : - 16 u^{2} + 24

- 8 \cdot 2 u^{2} + 8 \cdot 3

Multiplicar los numeros:

8 \cdot 2 = 16

= - 16 u^{2} + 8 \cdot 3

Multiplicar los numeros:

8 \cdot 3 = 24

= - 16 u^{2} + 24

= - 16 u^{2} + 24

4 u^{4} - 20 u^{2} + 25 = - 16 u^{2} + 24

Mover

24

al lado izquierdo

4 u^{4} - 20 u^{2} + 25 = - 16 u^{2} + 24

Restar

24

de ambos lados

4 u^{4} - 20 u^{2} + 25 - 24 = - 16 u^{2} + 24 - 24

Simplificar

4 u^{4} - 20 u^{2} + 1 = - 16 u^{2}

4 u^{4} - 20 u^{2} + 1 = - 16 u^{2}

Mover

16 u^{2}

al lado izquierdo

4 u^{4} - 20 u^{2} + 1 = - 16 u^{2}

Sumar

16 u^{2}

a ambos lados

4 u^{4} - 20 u^{2} + 1 + 16 u^{2} = - 16 u^{2} + 16 u^{2}

Simplificar

4 u^{4} - 4 u^{2} + 1 = 0

4 u^{4} - 4 u^{2} + 1 = 0

Re-escribir la ecuación con

v = u^{2}

v^{2} = u^{4}

4 v^{2} - 4 v + 1 = 0

Resolver

4 v^{2} - 4 v + 1 = 0 : v = \frac{1}{2}

4 v^{2} - 4 v + 1 = 0

Resolver con la fórmula general para ecuaciones de segundo grado:

4 v^{2} - 4 v + 1 = 0

Formula general para ecuaciones de segundo grado:

Para

a = 4, b = - 4, c = 1

v_{1, 2} = \frac{- ( - 4 ) \pm ( - 4 ) ^{2} - 4 \cdot 4 \cdot 1}{2 \cdot 4}

v_{1, 2} = \frac{- ( - 4 ) \pm ( - 4 ) ^{2} - 4 \cdot 4 \cdot 1}{2 \cdot 4}

(- 4)^{2} - 4 \cdot 4 \cdot 1 = 0

(- 4)^{2} - 4 \cdot 4 \cdot 1

Aplicar las leyes de los exponentes:

(- a)^{n} = a^{n},

n

es par

(- 4)^{2} = 4^{2}

= 4^{2} - 4 \cdot 4 \cdot 1

Multiplicar los numeros:

4 \cdot 4 \cdot 1 = 16

= 4^{2} - 16

4^{2} = 16

= 16 - 16

Restar:

16 - 16 = 0

= 0

v_{1, 2} = \frac{- ( - 4 ) \pm 0}{2 \cdot 4}

v = \frac{- ( - 4 )}{2 \cdot 4}

\frac{- ( - 4 )}{2 \cdot 4} = \frac{1}{2}

\frac{- ( - 4 )}{2 \cdot 4}

Aplicar la regla

- (- a) = a

= \frac{4}{2 \cdot 4}

Multiplicar los numeros:

2 \cdot 4 = 8

= \frac{4}{8}

Eliminar los terminos comunes:

4

= \frac{1}{2}

v = \frac{1}{2}

La solución a la ecuación de segundo grado es:

v = \frac{1}{2}

v = \frac{1}{2}

Sustituir hacia atrás la

v = u^{2},

resolver para

u

Resolver

u^{2} = \frac{1}{2} : u = \frac{1}{2}, u = - \frac{1}{2}

u^{2} = \frac{1}{2}

Para

x^{2} = f (a)

las soluciones son

x = f (a), - f (a)

u = \frac{1}{2}, u = - \frac{1}{2}

Las soluciones son

u = \frac{1}{2}, u = - \frac{1}{2}

u = \frac{1}{2}, u = - \frac{1}{2}

Verificar las soluciones:

u = \frac{1}{2}

Verdadero

, u = - \frac{1}{2}

Verdadero

Verificar las soluciones sustituyéndolas en

- 2 + \frac{1 + 2 u ^{2}}{2} + \frac{3 - 2 u ^{2}}{2} = 0

Quitar las que no concuerden con la ecuación.

Sustituir

u = \frac{1}{2} :

Verdadero

- 2 + \frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2} + \frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2} = 0

- 2 + \frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2} + \frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2} = 0

- 2 + \frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2} + \frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2}

\frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2} = 1

\frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2}

\frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2} = 1

\frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2}

2 (\frac{1}{2})^{2} = 1

2 (\frac{1}{2})^{2}

(\frac{1}{2})^{2} = \frac{1}{2}

(\frac{1}{2})^{2}

Aplicar las leyes de los exponentes:

a = a^{\frac{1}{2}}

= ((\frac{1}{2})^{\frac{1}{2}})^{2}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= (\frac{1}{2})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{1}{2}

= 2 \cdot \frac{1}{2}

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{1 + 1}{2}

Sumar:

1 + 1 = 2

= \frac{2}{2}

Aplicar la regla

\frac{a}{a} = 1

= 1

= 1

Aplicar la regla

1 = 1

= 1

\frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2} = 1

\frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2}

\frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2} = 1

\frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2}

2 (\frac{1}{2})^{2} = 1

2 (\frac{1}{2})^{2}

(\frac{1}{2})^{2} = \frac{1}{2}

(\frac{1}{2})^{2}

Aplicar las leyes de los exponentes:

a = a^{\frac{1}{2}}

= ((\frac{1}{2})^{\frac{1}{2}})^{2}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= (\frac{1}{2})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{1}{2}

= 2 \cdot \frac{1}{2}

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{3 - 1}{2}

Restar:

3 - 1 = 2

= \frac{2}{2}

Aplicar la regla

\frac{a}{a} = 1

= 1

= 1

Aplicar la regla

1 = 1

= 1

= - 2 + 1 + 1

Sumar/restar lo siguiente:

- 2 + 1 + 1 = 0

= 0

0 = 0

Verdadero

Sustituir

u = - \frac{1}{2} :

Verdadero

- 2 + \frac{1 + 2 ( - \frac{1}{2} ) ^{2}}{2} + \frac{3 - 2 ( - \frac{1}{2} ) ^{2}}{2} = 0

- 2 + \frac{1 + 2 ( - \frac{1}{2} ) ^{2}}{2} + \frac{3 - 2 ( - \frac{1}{2} ) ^{2}}{2} = 0

- 2 + \frac{1 + 2 ( - \frac{1}{2} ) ^{2}}{2} + \frac{3 - 2 ( - \frac{1}{2} ) ^{2}}{2}

\frac{1 + 2 ( - \frac{1}{2} ) ^{2}}{2} = 1

\frac{1 + 2 ( - \frac{1}{2} ) ^{2}}{2}

\frac{1 + 2 ( - \frac{1}{2} ) ^{2}}{2} = 1

\frac{1 + 2 ( - \frac{1}{2} ) ^{2}}{2}

1 + 2 (- \frac{1}{2})^{2} = 1 + 2 (\frac{1}{2})^{2}

1 + 2 (- \frac{1}{2})^{2}

(- \frac{1}{2})^{2} = (\frac{1}{2})^{2}

(- \frac{1}{2})^{2}

Aplicar las leyes de los exponentes:

(- a)^{n} = a^{n},

n

es par

(- \frac{1}{2})^{2} = (\frac{1}{2})^{2}

= (\frac{1}{2})^{2}

= 1 + 2 (\frac{1}{2})^{2}

= \frac{1 + 2 ( \frac{1}{2} ) ^{2}}{2}

2 (\frac{1}{2})^{2} = 1

2 (\frac{1}{2})^{2}

(\frac{1}{2})^{2} = \frac{1}{2}

(\frac{1}{2})^{2}

Aplicar las leyes de los exponentes:

a = a^{\frac{1}{2}}

= ((\frac{1}{2})^{\frac{1}{2}})^{2}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= (\frac{1}{2})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{1}{2}

= 2 \cdot \frac{1}{2}

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{1 + 1}{2}

Sumar:

1 + 1 = 2

= \frac{2}{2}

Aplicar la regla

\frac{a}{a} = 1

= 1

= 1

Aplicar la regla

1 = 1

= 1

\frac{3 - 2 ( - \frac{1}{2} ) ^{2}}{2} = 1

\frac{3 - 2 ( - \frac{1}{2} ) ^{2}}{2}

\frac{3 - 2 ( - \frac{1}{2} ) ^{2}}{2} = 1

\frac{3 - 2 ( - \frac{1}{2} ) ^{2}}{2}

3 - 2 (- \frac{1}{2})^{2} = 3 - 2 (\frac{1}{2})^{2}

3 - 2 (- \frac{1}{2})^{2}

(- \frac{1}{2})^{2} = (\frac{1}{2})^{2}

(- \frac{1}{2})^{2}

Aplicar las leyes de los exponentes:

(- a)^{n} = a^{n},

n

es par

(- \frac{1}{2})^{2} = (\frac{1}{2})^{2}

= (\frac{1}{2})^{2}

= 3 - 2 (\frac{1}{2})^{2}

= \frac{3 - 2 ( \frac{1}{2} ) ^{2}}{2}

2 (\frac{1}{2})^{2} = 1

2 (\frac{1}{2})^{2}

(\frac{1}{2})^{2} = \frac{1}{2}

(\frac{1}{2})^{2}

Aplicar las leyes de los exponentes:

a = a^{\frac{1}{2}}

= ((\frac{1}{2})^{\frac{1}{2}})^{2}

Aplicar las leyes de los exponentes:

(a^{b})^{c} = a^{b c}

= (\frac{1}{2})^{\frac{1}{2} \cdot 2}

\frac{1}{2} \cdot 2 = 1

\frac{1}{2} \cdot 2

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{1}{2}

= 2 \cdot \frac{1}{2}

Multiplicar fracciones:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{2}

Eliminar los terminos comunes:

2

= 1

= \frac{3 - 1}{2}

Restar:

3 - 1 = 2

= \frac{2}{2}

Aplicar la regla

\frac{a}{a} = 1

= 1

= 1

Aplicar la regla

1 = 1

= 1

= - 2 + 1 + 1

Sumar/restar lo siguiente:

- 2 + 1 + 1 = 0

= 0

0 = 0

Verdadero

Las soluciones son

u = \frac{1}{2}, u = - \frac{1}{2}

Sustituir en la ecuación

u = sin (x)

sin (x) = \frac{1}{2}, sin (x) = - \frac{1}{2}

sin (x) = \frac{1}{2}, sin (x) = - \frac{1}{2}

sin (x) = \frac{1}{2} : x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

sin (x) = \frac{1}{2}

Soluciones generales para

sin (x) = \frac{1}{2}

tabla de valores periódicos con

2 πn

intervalos:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

sin (x) = - \frac{1}{2} : x = \frac{5 π}{4} + 2 πn, x = \frac{7 π}{4} + 2 πn

sin (x) = - \frac{1}{2}

Soluciones generales para

sin (x) = - \frac{1}{2}

tabla de valores periódicos con

2 πn

intervalos:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

x = \frac{5 π}{4} + 2 πn, x = \frac{7 π}{4} + 2 πn

x = \frac{5 π}{4} + 2 πn, x = \frac{7 π}{4} + 2 πn

Combinar toda las soluciones

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn, x = \frac{5 π}{4} + 2 πn, x = \frac{7 π}{4} + 2 πn

Ejemplos populares

sin^2(x)-2cos(x)-2=0

sin^{2} (x) - 2 cos (x) - 2 = 0

1/2 tan^2(x)=1-sec(x)

\frac{1}{2} tan^{2} (x) = 1 - sec (x)

sin(2x)=sin^2(x)

sin (2 x) = sin^{2} (x)

2sec^2(x)+3(1/(cos(x)))=2

2 sec^{2} (x) + 3 (\frac{1}{cos ( x )}) = 2

cot^2(θ)-3=0

cot^{2} (θ) - 3 = 0