# Logarithm Base

dfgrosso shared this question 14 years ago

Hi everyone,

I searched the forum and i didn't found nothing about this. i hope i didn't miss it.

Can i set the base of the logarithm. In Help files only exists base 2, 10 and e. Is it possible to define any base or do i have to aply the base switch rule?

Daniel 1

do i have to aply the base switch rule?

Yes 1

You can incorporate the change of base formula into the logarithmic equation:

f(x)=a ln(x-c)/ ln(b)+d 1

Hi,

in 4.0 you can use log(b,x), j-Dog's formula is equivalent to f(x)=a log(b,x-c)+d. 1

hello,

I used the following formula:f(x)=a log(b,x-c)+d

but the writing in latex appears as follows.is it that can improve the writing like this: 0.3 log[size=85]1.6[/size](x+2) Files: 10.JPG 1

hello

these problems are normal in GG

you can define

h(x)=x-c

g(x)=simplify[h(x)]

f(x)=f(x) = a log(b, g(x)) + d

i think you'll like more

saludos 1

these problems are normal in GG

In fact it's a bug which we fixed yesterday (so will be OK in the next release :) ) 1

hello,

thanks murkle the problem is resolved.