- #1
sonya
- 23
- 0
sum1 here help!
ok...since no1s helpin in the hmwk section thot id take a shot here..
if f(x)= (2e^x -8)/(10e^x + 9)
then wat is f^(-1)(x)?
i first took the ln of both sides...
getting lny = ln (2e^x - 8)/(10e^x + 9)
then using one of the properties i get
lny = ln (2e^x - 8) - ln (10e^x + 9)
and from here i get stuck...how do i solve for x?? am i doing it a totally wrong way?? please help!
and i did get a sol'n from sum1 but i had a question abt it...some1 b kind enuf 2 help!
ok...since no1s helpin in the hmwk section thot id take a shot here..
if f(x)= (2e^x -8)/(10e^x + 9)
then wat is f^(-1)(x)?
i first took the ln of both sides...
getting lny = ln (2e^x - 8)/(10e^x + 9)
then using one of the properties i get
lny = ln (2e^x - 8) - ln (10e^x + 9)
and from here i get stuck...how do i solve for x?? am i doing it a totally wrong way?? please help!
and i did get a sol'n from sum1 but i had a question abt it...some1 b kind enuf 2 help!