Question

Evaluate ln 7? How do I do this?

Answer 1

e^x = 7
Solve for x

Answer 2

you can't manually

Answer 3

So how would I plug it in?

Answer 4

just type that in your calculator

Answer 5

you have two logs on your calculator.
one button says "ln" the other says "log"
first one is base 3, second one is base 10

Answer 6

if you have a decent calculator you just hit 'ln 7'
for a cheap one you need "7 ln"

Answer 7

Okay, thanks :)

Answer 8

Write log4 14 as a logarithm of base 3? I don't really understand how to get the same base.

Answer 9

use change of base formula
\[\frac{\text{Log}_314}{\text{Log}_34}\]

Answer 10

Alright! Can I plug that in on my calculator too?

Answer 11

I got 56.

Answer 12

How ?

Answer 13

Write log6 5 as a logarithm of base 4. I got log4) 5 / log4) 6

Answer 14

I am not sure if 56 is right

Answer 15

Sorry, I am not getting replies till much later. It's weird and i i divided it, what you did. But i guess I just leave it like that.

Answer 16

yes, that's probably good idea

Answer 17

lol.