Question

State the inverse of f(x)=3e^(-x).

Answer 1

The inverse fuctions is:
\[-\ln (x/3)\]

Answer 2

hmm the choice given is:
a.ln(3/x)
b.ln(x/3)
c.(1/3)ln x
d. (ln x)^0.5
e. ln(3-x)

Answer 3

there is no negative answer.

Answer 4

the answer is A

Answer 5

how you get it?

Answer 6

Assuming x is positive then kboy is right, the A is the correct answer.

Answer 7

f(x)=3e^(-x)....y=3e^(-x)....swop x and y then solve for y

Answer 8

so u wud have x=3e^(-y)...now solve for y

Answer 9

hmm can u show me the working? i still dont understand.

Answer 10

A great tutorial that will help you understand the proccess of finding the inverse function:
http://www.analyzemath.com/inversefunction/Tutorials.html

Answer 11

Okay.i got it now.thanks alot!!