Ask your own question, for FREE!
Mathematics 15 Online
OpenStudy (ilovecomputers1):

Please help. Given the function f(x) =2x-5/3 , which of the below expressions is correct? f−1(x) = 5-2x/3 f−1(x) = 3x-5 /2 f−1(x) = 3x+5 /2 f−1(x) = -2x-5 /3

OpenStudy (gorv):

for inverse find value of x

OpenStudy (gorv):

f(x)=(2x-5)/3

OpenStudy (gorv):

3*f(x)=2x-5

OpenStudy (gorv):

(3*f(x)+5)/2=x this is your inverse

OpenStudy (ilovecomputers1):

Oh that makes sense now. @gorv I was confused because of the division, but I think I get it now.

OpenStudy (gorv):

wait

OpenStudy (gorv):

now replace f(x) with x and x with f^-1(x)

OpenStudy (gorv):

inverse=(3x+5)/2

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!