Question

Inverse of Log base 4 of x

Answer 1

y=4^x\[f(x)=4^x\] ?

Answer 2

Yes Perto! xD

Answer 3

*gasp i was thinking that!
well there's one i got right on the test..

Answer 4

Now, try this one!
Log base 2 of x + 3

Answer 5

the inverse of that?

Answer 6

yesh!

Answer 7

f(x)= 2^(x+3)

Answer 8

?

Answer 9

Nope!

Answer 10

D:

Answer 11

f(x)= 2^x ?

Answer 12

wait a sec!

Answer 13

wait lemme see!

Answer 14

where's hanh?

Answer 15

The answer is
y = 2^x - 3

Answer 16

why minus?

Answer 17

can you show me how you did that

Answer 18

cuz its the inverse

Answer 19

darn..that means i probably got that wrong in the test. :\

Answer 20

Okie! So it's:

y = Log base e of x + 3, NOT (x+3)
So it's
2^y = x + 3
There fore, 2^x - 3 = y

Answer 21

id remember if i got that right

Answer 22

base 2*

Answer 23

next problem

Answer 24

Log base x of 3x

Answer 25

thats wierd

Answer 26

x ^ y = 3x

Inverse = x^x = 3y, so it's
y = (x^x) / 3

Answer 27

thats wierd

Answer 28

okay, I'll change base x to base 2

Answer 29

why?

Answer 30

so that you won't be confuse with which x to switch

Answer 31

2^y or x^y in the original = 3x
Inverse = 2^x original x^x = 3y
so divide both side by 3 to get y
y = (2^x)/3 or (x^x)/3 in the original