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Popular >

inverse of-cos(2x)

Solution

inverse

- cos (2 x)

Solution

\frac{arccos ( - x )}{2}

Solution steps

Solve for

cos (2 x), y = - cos (2 x)

cos (2 x) = - y

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}

Graph

Popular Examples

inverse of f(x)=-2x^7-2 inverse

f (x) = - 2 x^{7} - 2

inverse of f(x)=2x+sqrt(4+x^2)inverse

f (x) = 2 x + 4 + x^{2}

inverse of f(x)=x^2-9x+20 inverse

f (x) = x^{2} - 9 x + 20

inverse of f(x)=-4sqrt(x-3)inverse

f (x) = - 4 x - 3

inverse of x^4-16x^2 inverse

x^{4} - 16 x^{2}

Frequently Asked Questions (FAQ)

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