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Popular >

inverse of y=cos(2x)

Solution

inverse

y = cos (2 x)

Solution

\frac{arccos ( x )}{2}

Solution steps

cos (a) = b \Rightarrow a = arccos (b)

2 x = arccos (y)

Solve for

x, 2 x = arccos (y)

\frac{arccos ( y )}{2}

Substitute

y = x

\frac{arccos ( x )}{2}

Popular Examples

periodicity of 1.5cos(6x-3.2)periodicity

1.5 cos (6 x - 3.2)

domain of (sqrt(3x))/(x+9)domain

\frac{3 x}{x + 9}

f (x) = 3

intercepts of (x^2+8x+15)/(x+5)intercepts

\frac{x ^{2} + 8 x + 15}{x + 5}

asymptotes of f(x)=-e^{-x}asymptotes

f (x) = - e^{- x}

Frequently Asked Questions (FAQ)

What is the inverse of y=cos(2x) ?
The inverse of y=cos(2x) is (arccos(x))/2