log rule...

[Prashan_punk]

does (x+h)log(x+h) = xlog(x+h) + hlog(x+h) ?

[ajb]

Yes.

 

log of a number is a number and then you can use the linear properties of multiplication.

 

Am I missing something?

[BigMoosie]

This is true for any function, you could replace 'log' with 'sin' or 'exp' or anything else.

See http://en.wikipedia.org/wiki/Distributivity

[jian]

That is not log rule, is basic rule like

a(b+c)=ab+ac.

it is true.