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인기 있는 삼각법 >

solvefor x,f=2cos(3x^2-1)entoncesf

해법

을 위해 해결하다

x, f = 2 cos (3 x^{2} - 1) e n t o n ces f

해법

x = \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

솔루션 단계

f = 2 cos (3 x^{2} - 1) e n t o n ces f

측면 전환

2 cos (3 x^{2} - 1) e n t o n ces f = f

양쪽을 다음으로 나눕니다

2 e n t o n ces f; c \neq = 0

2 cos (3 x^{2} - 1) e n t o n ces f = f

양쪽을 다음으로 나눕니다

2 e n t o n ces f; c \neq = 0

\frac{2 cos ( 3 x ^{2} - 1 ) e n t o n ces f}{2 e n t o n ces f} = \frac{f}{2 e n t o n ces f}; c \neq = 0

단순화

\frac{2 cos ( 3 x ^{2} - 1 ) e n t o n ces f}{2 e n t o n ces f} = \frac{f}{2 e n t o n ces f}

\frac{2 cos ( 3 x ^{2} - 1 ) e n t o n ces f}{2 e n t o n ces f}

간소화하다 :

cos (3 x^{2} - 1)

\frac{2 cos ( 3 x ^{2} - 1 ) e n t o n ces f}{2 e n t o n ces f}

2 cos (3 x^{2} - 1) e n t o n ces f = 2 e^{2} c f t os n^{2} cos (3 x^{2} - 1)

2 cos (3 x^{2} - 1) e n t o n ces f

지수 규칙 적용:

a^{b} \cdot a^{c} = a^{b + c}

ee = e^{1 + 1}

= 2 cos (3 x^{2} - 1) n t o n c e^{1 + 1} s f

숫자 추가:

1 + 1 = 2

= 2 cos (3 x^{2} - 1) n t o n c e^{2} s f

지수 규칙 적용:

a^{b} \cdot a^{c} = a^{b + c}

nn = n^{1 + 1}

= 2 cos (3 x^{2} - 1) t o n^{1 + 1} c e^{2} s f

숫자 추가:

1 + 1 = 2

= 2 cos (3 x^{2} - 1) t o n^{2} c e^{2} s f

= \frac{2 e ^{2} c f t os n ^{2} cos ( 3 x ^{2} - 1 )}{2 eec f t os nn}

2 e n t o n ces f = 2 e^{2} c f t os n^{2}

2 e n t o n ces f

지수 규칙 적용:

a^{b} \cdot a^{c} = a^{b + c}

ee = e^{1 + 1}

= 2 n t o n c e^{1 + 1} s f

숫자 추가:

1 + 1 = 2

= 2 n t o n c e^{2} s f

지수 규칙 적용:

a^{b} \cdot a^{c} = a^{b + c}

nn = n^{1 + 1}

= 2 t o n^{1 + 1} c e^{2} s f

숫자 추가:

1 + 1 = 2

= 2 t o n^{2} c e^{2} s f

= \frac{2 e ^{2} c f t os n ^{2} cos ( 3 x ^{2} - 1 )}{2 e ^{2} c f t os n ^{2}}

숫자를 나눕니다:

\frac{2}{2} = 1

= \frac{e ^{2} c f t os n ^{2} cos ( 3 x ^{2} - 1 )}{e ^{2} c f t os n ^{2}}

공통 요인 취소:

t

= \frac{e ^{2} c f os n ^{2} cos ( 3 x ^{2} - 1 )}{e ^{2} c f os n ^{2}}

공통 요인 취소:

o

= \frac{e ^{2} c f s n ^{2} cos ( 3 x ^{2} - 1 )}{e ^{2} c f s n ^{2}}

공통 요인 취소:

n^{2}

= \frac{e ^{2} c f s cos ( 3 x ^{2} - 1 )}{e ^{2} c f s}

공통 요인 취소:

c

= \frac{e ^{2} f s cos ( 3 x ^{2} - 1 )}{e ^{2} f s}

공통 요인 취소:

e^{2}

= \frac{f s cos ( 3 x ^{2} - 1 )}{f s}

공통 요인 취소:

s

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

공통 요인 취소:

f

= cos (3 x^{2} - 1)

\frac{f}{2 e n t o n ces f}

간소화하다 :

\frac{1}{2 e ^{2} c t os n ^{2}}

\frac{f}{2 e n t o n ces f}

2 e n t o n ces f = 2 e^{2} c f t os n^{2}

2 e n t o n ces f

지수 규칙 적용:

a^{b} \cdot a^{c} = a^{b + c}

ee = e^{1 + 1}

= 2 n t o n c e^{1 + 1} s f

숫자 추가:

1 + 1 = 2

= 2 n t o n c e^{2} s f

지수 규칙 적용:

a^{b} \cdot a^{c} = a^{b + c}

nn = n^{1 + 1}

= 2 t o n^{1 + 1} c e^{2} s f

숫자 추가:

1 + 1 = 2

= 2 t o n^{2} c e^{2} s f

= \frac{f}{2 e ^{2} c f t os n ^{2}}

공통 요인 취소:

f

= \frac{1}{2 e ^{2} c t os n ^{2}}

cos (3 x^{2} - 1) = \frac{1}{2 e ^{2} c t os n ^{2}}; c \neq = 0

cos (3 x^{2} - 1) = \frac{1}{2 e ^{2} c t os n ^{2}}; c \neq = 0

cos (3 x^{2} - 1) = \frac{1}{2 e ^{2} c t os n ^{2}}; c \neq = 0

트리거 역속성 적용

cos (3 x^{2} - 1) = \frac{1}{2 e ^{2} c t os n ^{2}}

일반 솔루션

cos (3 x^{2} - 1) = \frac{1}{2 e ^{2} c t os n ^{2}}

cos (x) = a \Rightarrow x = arccos (a) + 2 πk, x = - arccos (a) + 2 πk

3 x^{2} - 1 = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk, 3 x^{2} - 1 = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

3 x^{2} - 1 = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk, 3 x^{2} - 1 = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

3 x^{2} - 1 = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

해결 :

x = \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

3 x^{2} - 1 = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

1

를 오른쪽으로 이동

3 x^{2} - 1 = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

더하다

1

양쪽으로

3 x^{2} - 1 + 1 = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

단순화

3 x^{2} = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

3 x^{2} = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

양쪽을 다음으로 나눕니다

3

3 x^{2} = arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

양쪽을 다음으로 나눕니다

3

\frac{3 x ^{2}}{3} = \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

단순화

x^{2} = \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

x^{2} = \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

위해서

x^{2} = f (a)

해결책은

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

x = \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}, x = - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

\frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

단순화하세요:

\frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

\frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

분수를 합치다

\frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} )}{3} + \frac{2 πk}{3} + \frac{1}{3} : \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

규칙 적용

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

= \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

= \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} ) + 2 πk + 1}{3}

= \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

- \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

단순화하세요:

- \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

- \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

분수를 합치다

\frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} )}{3} + \frac{2 πk}{3} + \frac{1}{3} : \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

규칙 적용

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

= \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

= - \frac{2 πk + arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 1}{3}

= - \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

x = \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

3 x^{2} - 1 = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

해결 :

x = \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

3 x^{2} - 1 = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

1

를 오른쪽으로 이동

3 x^{2} - 1 = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk

더하다

1

양쪽으로

3 x^{2} - 1 + 1 = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

단순화

3 x^{2} = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

3 x^{2} = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

양쪽을 다음으로 나눕니다

3

3 x^{2} = - arccos (\frac{1}{2 e ^{2} c t os n ^{2}}) + 2 πk + 1

양쪽을 다음으로 나눕니다

3

\frac{3 x ^{2}}{3} = - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

단순화

x^{2} = - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

x^{2} = - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

위해서

x^{2} = f (a)

해결책은

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

x = - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}, x = - - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

- \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

단순화하세요:

\frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

- \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

분수를 합치다

- \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} )}{3} + \frac{2 πk}{3} + \frac{1}{3} : \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

규칙 적용

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

= \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

= \frac{- arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} ) + 2 πk + 1}{3}

= \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

- - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

단순화하세요:

- \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

- - \frac{arccos ( \frac{1}{2 e ^{2} c t os n ^{2}} )}{3} + \frac{2 πk}{3} + \frac{1}{3}

분수를 합치다

- \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} )}{3} + \frac{2 πk}{3} + \frac{1}{3} : \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

규칙 적용

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

= \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

= - \frac{2 πk + 1 - arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} )}{3}

= - \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

x = \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

x = \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}, x = - \frac{- arccos ( \frac{1}{2 e ^{2} c n ^{2} t os} ) + 2 πk + 1}{3}

그래프

인기 있는 예

tan (a) = \frac{5}{8}

solvefor x,z=tan(x/2)

so l v e f or x, z = tan (\frac{x}{2})

tan(x/2)=sqrt(3),0<= x<= 2pi

tan (\frac{x}{2}) = 3, 0 \leq x \leq 2 π

0 = 4 sin (2 θ)

tan (θ) + 3 = 0