Question

Is this RIGHT ?

Which of the following is an example of the inverse of an exponential function?

A. y =
B. y = 4x
C. y = 2x MY CHOICE!
D. y = log2x

Answer 1

Recheck your choice. It might be correct, or it might be incorrect.

Answer 2

not really

Answer 3

do you know what an exponential function looks like?

Answer 4

The inverse must include the log. or ln

Answer 5

right, so if you want the inverse you need the natural log.

Answer 6

yep

Answer 7

And exponential function is \(f(x) = a^x\) for some number a . The inverse of that will be \(log_a{x}\)

Answer 8

Was that supposed to say \(\Large \log_2{64} = 6\)?

Answer 9

Correct. \(2^6 = 64\)

Answer 10

If I answer do i get a medal?

Answer 11

Its the same thing

Answer 12

Best response is the same as a medal, but you shouldn't give best response to someone who tells you the answer. You should give it to someone who teaches you how to find the answer on your own.

Answer 13

To find the inverse of a function, write a new equation with x and y switched, then solve for y.

Answer 14

The switching isn't quite like that. You moved the 4 over. When I say switching, I mean, wherever there was an x, write y. Wherever there was a y, write x. Don't change anything else.

Answer 15

It would be y=(x+2)/4. You achieve this be replacing the x value with y and the y value with x. x=4y-2

Answer 16

Yes, like that =)
Now, just solve your new equation for y. Let me see your attempt.

Answer 17

I'm sorry, I can't make sense of what you're doing there. That looks like a list of possible answers.

Answer 18

The switching part gives you
x = 4y -2

Now solve that for y. Get y by itself. That means you have to move the 2 over, and then move the 4 over.

Answer 19

I don't abide guessing.

Answer 20

Poor you :c

Answer 21

I can tell you that it is incorrect. Remember your algebra and solve for y. Simple stuff.