Question

Partial derivative !!

Answer 1

of what?

Answer 2

I don't know what this format .nb is you're attaching. I can't open them.

Answer 3

I use wolfram mathematics

Answer 4

why dont you copy it in word document? or maybe some other doc which is universally accepted? we cant get your questions

Answer 5

OK

Answer 6

Sorry, Replace
a -> G
b -> F

Answer 7

please, help me.

Answer 8

I still can't read it. Take a screen shot of the question and attach the file of that. Or just type the silly question.

Answer 9

iwanbahyudin 
Attach the .nb file and I will convert it to PDF format for you. I use mostly Mathematica 8.04 to do math calculations for problems on this site.

Answer 10

can anyone give me the activation code for the wolfram mathematica 8

Answer 11

OK, I have found it

Answer 12

@luckey: stop pirating software. If you want it, buy it.