Question

f(x)=1/4x-5 find (f(times)f^-1)(-2)

Answer 1

answer 1/17

Answer 2

\[ff ^{-1}(2)\]
Find inverse of f(x) first,
y=1/(4x-5)

x=(1+5y)/y

\[f ^{-1}(x)=(1+5x)/x\]

Substitute into equation.

=f((1+5(2))/2)

=1/(4(11/2)-5)

=1/17

Answer 3

x All real numbers -2 0
these are the answer choices

Answer 4

I get it
Let me write

Answer 5

We have \[f (f^{-1}(x))\] we have to find value of this for x=-2
we know that \[f f^{-1} (x)= x\]
so
\[f f^{-1} (-2)= -2\]

Answer 6

Thank you so so sooooo much D: I've been trying to get an answer for this problem forever <3333