Just want to check that i am doing this question correctly.(adsbygoogle = window.adsbygoogle || []).push({});

f(x) = 2x+5 h(x) = 1/x , x [tex]\neq[/tex]0

Find the inverse of fh(x)

So first i found the function fh(x)

2*1/x+5

then let y = 2*1/x+5 , x [tex]\neq[/tex]0

now this is the bit i cant rememeber how to do, when i try and make x the subject do i need to multiply the 2 on the RHS as well as the y on the LHS?

if i multiply the 2 then i end up with f-1(x)=2x+5/x

If i dont i end up with f-1(x) = x+7

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# Inverse Functions

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