Question

Solve: 9ln(x-2)+3=8

Answer 1

Now this is the other way around. remember how last time we had e^(2x)

Answer 2

yes

Answer 3

Okay last time we had to take ln to get the x down, now we will have to raise everything to the e to get it out of ln

Answer 4

Okay so:
first simplify this a bit. Subtract 3 from both sides and type what u get.

Answer 5

are u still here?

Answer 6

9ln(x-2)=5

Answer 7

Okay, now divide both sides by 9, see the point here is to get the Ln(____) part on it's own

Answer 8

MTH_Dumbo?

Answer 9

x-2=.5555

Answer 10

I think u meant:
ln(x-2)=0.5555

Answer 11

yeah

Answer 12

so now:
e^[ln(x-2)]=e^(0.5555)
and e^LnA = A, therefore:
x-2 = e^(0.55555)

Answer 13

add two to both sides, evaluate and u are done.

Answer 14

so would I have ln(x)=2.5555

Answer 15

No u don't need Ln we alread got rid of it when we raised e^Ln(x-2)

Answer 16

so how would I enter x=2.5555 to get my final answer?

Answer 17

Hello?

Answer 18

oh sorry i didn't notice ur response..

Answer 19

x-2 = e^(0.55555)
x = e^(0.5555)+2

Answer 20

that's ur answer

Answer 21

When I enter ln(.5555)+2 on my calculator, I'm getting 1.4121 which is not the answer my book has.

Answer 22

Wait!!! Nevermind! I see what I did wrong. I got it now.

Answer 23

i told u e^(0.5555) no wonder haha anyway good for u!

Answer 24

I know, I know. I forgot to hit shift on my calculator to get e^. Lol

Answer 25

Hey...Thanks for all your help. You're awesome!

Answer 26

np =)