en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

inverse of f(x)=cos(2x)

Solution

inverse

f (x) = 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

simplify (2.4)(6.1)simplify

(2.4) (6.1)

symmetry y=3x^2 symmetry

y = 3 x^{2}

parity sqrt(9t+4sin^2(2t)+4cos^2(2t))parity

9 t + 4 sin^{2} (2 t) + 4 cos^{2} (2 t)

midpoint (-1,3),(3,1)midpoint

(- 1, 3), (3, 1)

critical f(x)=x^3-27x+3 critical points

f (x) = x^{3} - 27 x + 3

Frequently Asked Questions (FAQ)

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