How to decompose the formula?

yezi · science forum beginner Joined: 18 Jan 2006 Posts: 12

Dear All :

I have one question with the following formula : X is discrete

FQ:= Sum (re(x)*ln(re(x))), I have value

Q1:=Sum(r1(x)*ln(r1(x))) and
Q2:=sum(r2(x)*ln(r2(x))),

also I know

the relation of re(x) , r1(x) and r2(x).

re(x)= convolution of r1(x) and r2(x);

I tried to use definition and decompose the FQ from current space ,
but it cannot work. The ln prohibit that method.

Is there any way I can use Q1and Q2 to express the FQ?

Thanks for any hint.

Bin

Google