# F(x)=ln(5x-2)

Watch
#1
Inverse f(x)=ln(5x-2)
0
4 weeks ago
#2
(Original post by Nevra)
Inverse f(x)=ln(5x-2)
f(x) = y

Change y and x in this equation first. Do you know what the inverse of ln is? right, it is the e-function! you have to change this ln function to an e function.
0
3 weeks ago
#3
I was looking for a good page for inverse logarithmic functions, and I was successful. For explanations -> use this link!
Last edited by Kallisto; 3 weeks ago
0
3 weeks ago
#4
(Original post by Nevra)
Inverse f(x)=ln(5x-2)
edited cos apparently full solutions aren't allowed :/

let f(x) = y makes it easier to see what you're doing imo
y = ln(5x-2) you need to make x the subject by getting rid of ln(...). try replacing it with its inverse

make sure to give in the form of f^-1(x) at the end
Last edited by thisistemp; 3 weeks ago
0
3 weeks ago
#5
(Original post by thisistemp)
let f(x) = y .(easy to see what you're doing )
Please edit / delete your post - it's against forum rules to post full solutions!

Stick to hints / guidance so the OP can solve by themselves
1
3 weeks ago
#6
(Original post by thisistemp)
edited cos apparently full solutions aren't allowed :/

let f(x) = y .(makes it easier to see what you're doing )
y = ln(5x-2) .you need to make x the subject by getting rid of ln(...). try replacing it with its inverse
(e^x + 2) / 5 = y .give in the form of f^-1(x) and you're done
You can reply clues here at this place, but not the whole solution of the problem! that is against the rules, so please change it.
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### Who is winning Euro 2020

France (107)
27.65%
England (131)
33.85%
Belgium (30)
7.75%
Germany (41)
10.59%
Spain (8)
2.07%
Italy (34)
8.79%
Netherlands (13)
3.36%
Other (Tell us who) (23)
5.94%