English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Trigonometria >

sin^2(3x)-sin^2(x)=0

Solução

sin^{2} (3 x) - sin^{2} (x) = 0

Solução

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

Graus

x = 0^{\circ} + 18 0^{\circ} n, x = 9 0^{\circ} + 18 0^{\circ} n, x = 4 5^{\circ} + 18 0^{\circ} n, x = 13 5^{\circ} + 18 0^{\circ} n

Passos da solução

sin^{2} (3 x) - sin^{2} (x) = 0

Fatorar

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

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

Aplicar a regra da diferença de quadrados:

x^{2} - y^{2} = (x + y) (x - y)

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

= (sin (3 x) + sin (x)) (sin (3 x) - sin (x))

(sin (3 x) + sin (x)) (sin (3 x) - sin (x)) = 0

Resolver cada parte separadamente

sin (3 x) + sin (x) = 0 or sin (3 x) - sin (x) = 0

sin (3 x) + sin (x) = 0 : x = πn, x = \frac{π}{2} + πn

sin (3 x) + sin (x) = 0

Reeecreva usando identidades trigonométricas

sin (3 x) + sin (x)

Use a identidade da transformação de soma em produto:

sin (s) + sin (t) = 2 sin (\frac{s + t}{2}) cos (\frac{s - t}{2})

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

Simplificar

2 sin (\frac{3 x + x}{2}) cos (\frac{3 x - x}{2}) : 2 sin (2 x) cos (x)

2 sin (\frac{3 x + x}{2}) cos (\frac{3 x - x}{2})

\frac{3 x + x}{2} = 2 x

\frac{3 x + x}{2}

Somar elementos similares:

3 x + x = 4 x

= \frac{4 x}{2}

Dividir:

\frac{4}{2} = 2

= 2 x

= 2 sin (2 x) cos (\frac{3 x - x}{2})

\frac{3 x - x}{2} = x

\frac{3 x - x}{2}

Somar elementos similares:

3 x - x = 2 x

= \frac{2 x}{2}

Dividir:

\frac{2}{2} = 1

= x

= 2 sin (2 x) cos (x)

= 2 sin (2 x) cos (x)

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

Resolver cada parte separadamente

cos (x) = 0 or sin (2 x) = 0

cos (x) = 0 : x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

cos (x) = 0

Soluções gerais para

cos (x) = 0

cos (x)

tabela de periodicidade com ciclo de

2 πn

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} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{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} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

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

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

sin (2 x) = 0 : x = πn, x = \frac{π}{2} + πn

sin (2 x) = 0

Soluções gerais para

sin (2 x) = 0

sin (x)

tabela de periodicidade com ciclo de

2 πn

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}

2 x = 0 + 2 πn, 2 x = π + 2 πn

2 x = 0 + 2 πn, 2 x = π + 2 πn

Resolver

2 x = 0 + 2 πn : x = πn

2 x = 0 + 2 πn

0 + 2 πn = 2 πn

2 x = 2 πn

Dividir ambos os lados por

2

2 x = 2 πn

Dividir ambos os lados por

2

\frac{2 x}{2} = \frac{2 πn}{2}

Simplificar

x = πn

x = πn

Resolver

2 x = π + 2 πn : x = \frac{π}{2} + πn

2 x = π + 2 πn

Dividir ambos os lados por

2

2 x = π + 2 πn

Dividir ambos os lados por

2

\frac{2 x}{2} = \frac{π}{2} + \frac{2 πn}{2}

Simplificar

x = \frac{π}{2} + πn

x = \frac{π}{2} + πn

x = πn, x = \frac{π}{2} + πn

Combinar toda as soluções

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

Junte intervalos que se sobrepoem

x = πn, x = \frac{π}{2} + πn

sin (3 x) - sin (x) = 0 : x = \frac{π}{4} + πn, x = \frac{3 π}{4} + πn, x = 2 πn, x = π + 2 πn

sin (3 x) - sin (x) = 0

Reeecreva usando identidades trigonométricas

sin (3 x) - sin (x)

Use a identidade da transformação de soma em produto:

sin (s) - sin (t) = 2 sin (\frac{s - t}{2}) cos (\frac{s + t}{2})

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

Simplificar

2 sin (\frac{3 x - x}{2}) cos (\frac{3 x + x}{2}) : 2 sin (x) cos (2 x)

2 sin (\frac{3 x - x}{2}) cos (\frac{3 x + x}{2})

\frac{3 x - x}{2} = x

\frac{3 x - x}{2}

Somar elementos similares:

3 x - x = 2 x

= \frac{2 x}{2}

Dividir:

\frac{2}{2} = 1

= x

= 2 sin (x) cos (\frac{3 x + x}{2})

\frac{3 x + x}{2} = 2 x

\frac{3 x + x}{2}

Somar elementos similares:

3 x + x = 4 x

= \frac{4 x}{2}

Dividir:

\frac{4}{2} = 2

= 2 x

= 2 sin (x) cos (2 x)

= 2 sin (x) cos (2 x)

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

Resolver cada parte separadamente

cos (2 x) = 0 or sin (x) = 0

cos (2 x) = 0 : x = \frac{π}{4} + πn, x = \frac{3 π}{4} + πn

cos (2 x) = 0

Soluções gerais para

cos (2 x) = 0

cos (x)

tabela de periodicidade com ciclo de

2 πn

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} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{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} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

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

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

Resolver

2 x = \frac{π}{2} + 2 πn : x = \frac{π}{4} + πn

2 x = \frac{π}{2} + 2 πn

Dividir ambos os lados por

2

2 x = \frac{π}{2} + 2 πn

Dividir ambos os lados por

2

\frac{2 x}{2} = \frac{\frac{π}{2}}{2} + \frac{2 πn}{2}

Simplificar

\frac{2 x}{2} = \frac{\frac{π}{2}}{2} + \frac{2 πn}{2}

Simplificar

\frac{2 x}{2} : x

\frac{2 x}{2}

Dividir:

\frac{2}{2} = 1

= x

Simplificar

\frac{\frac{π}{2}}{2} + \frac{2 πn}{2} : \frac{π}{4} + πn

\frac{\frac{π}{2}}{2} + \frac{2 πn}{2}

\frac{\frac{π}{2}}{2} = \frac{π}{4}

\frac{\frac{π}{2}}{2}

Aplicar as propriedades das frações:

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

= \frac{π}{2 \cdot 2}

Multiplicar os números:

2 \cdot 2 = 4

= \frac{π}{4}

\frac{2 πn}{2} = πn

\frac{2 πn}{2}

Dividir:

\frac{2}{2} = 1

= πn

= \frac{π}{4} + πn

x = \frac{π}{4} + πn

x = \frac{π}{4} + πn

x = \frac{π}{4} + πn

Resolver

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

2 x = \frac{3 π}{2} + 2 πn

Dividir ambos os lados por

2

2 x = \frac{3 π}{2} + 2 πn

Dividir ambos os lados por

2

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

Simplificar

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

Simplificar

\frac{2 x}{2} : x

\frac{2 x}{2}

Dividir:

\frac{2}{2} = 1

= x

Simplificar

\frac{\frac{3 π}{2}}{2} + \frac{2 πn}{2} : \frac{3 π}{4} + πn

\frac{\frac{3 π}{2}}{2} + \frac{2 πn}{2}

\frac{\frac{3 π}{2}}{2} = \frac{3 π}{4}

\frac{\frac{3 π}{2}}{2}

Aplicar as propriedades das frações:

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

= \frac{3 π}{2 \cdot 2}

Multiplicar os números:

2 \cdot 2 = 4

= \frac{3 π}{4}

\frac{2 πn}{2} = πn

\frac{2 πn}{2}

Dividir:

\frac{2}{2} = 1

= πn

= \frac{3 π}{4} + πn

x = \frac{3 π}{4} + πn

x = \frac{3 π}{4} + πn

x = \frac{3 π}{4} + πn

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

sin (x) = 0 : x = 2 πn, x = π + 2 πn

sin (x) = 0

Soluções gerais para

sin (x) = 0

sin (x)

tabela de periodicidade com ciclo de

2 πn

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 = 0 + 2 πn, x = π + 2 πn

x = 0 + 2 πn, x = π + 2 πn

Resolver

x = 0 + 2 πn : x = 2 πn

x = 0 + 2 πn

0 + 2 πn = 2 πn

x = 2 πn

x = 2 πn, x = π + 2 πn

Combinar toda as soluções

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

Combinar toda as soluções

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

Junte intervalos que se sobrepoem

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

Gráfico

Exemplos populares

sec^2(x)+6tan(x)+4=0

sec^{2} (x) + 6 tan (x) + 4 = 0

1-2tan^2(θ)=-tan^2(θ)

1 - 2 tan^{2} (θ) = - tan^{2} (θ)

cos(a)= 1/3

cos (a) = \frac{1}{3}

2cos(2θ)=sqrt(3)

2 cos (2 θ) = 3

2sin^2(θ)-5sin(θ)+2=0

2 sin^{2} (θ) - 5 sin (θ) + 2 = 0