Find the inverse function of f(x) = 2arccosx. f-1(x) = a.) 1/2 cos(x)b.) 2 cos(x)c.) cos (1/2 x)d.) cos (2x)

ANSWER

C.

EXPLANATION

The given function is

Let

Interchange x and y.

Divide both sides by 2.

We take cosines to get,

step-by-step explanation:

in the absence of parentheses, i will have to make some assumptions:   i interpret your (3x+5/y^6)(4y^3/5)​ to mean:

3x + 5     4y^(3/5)       (3x + 5)(4)

* =

    y^6             1               y^(6-3/5)

if this is not what you expected, repost your question using parentheses to indicate whether you meant

4y^3

    or   4y^(3/5)

    5