Find the inverse of the function.
f(x)=3squareroot x/8-4

i keep getting f−1(x)=512x3+6144x2+24576x+32768

Question

Find the inverse of the function. 
f(x)=3squareroot x/8-4

i keep getting f−1(x)=512x3+6144x2+24576x+32768

anonymous · Answer

when these are the answer choices f-1(x) = [8(x + 4)]3
 f-1(x) = 8(x + 4)3
 f-1(x) = 8(x3 + 4)
 f-1(x) = 24(x + 4)

anonymous · Answer

Can you draw the function?

anonymous · Answer

Because it's not very clear. :)

jack1 · Answer

hi... is this your function?
$\Large f(x)=3 \times \sqrt{ \frac x{8-4}}$

anonymous · Answer

no

jack1 · Answer

is it this?
$\Large f(x)=3 \times \sqrt{ \frac x8-4}$

anonymous · Answer

$$f(x)=\sqrt[3]{x/8}-4$$

anonymous · Answer

Step 1: Change f(x) to y.
Step 2: Flip x and y. So y will become x, and x will become y.
Step 3: Make the function look like this--> y=mx+b

anonymous · Answer

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