You are not logged in.
Post a reply
Topic review (newest first)
help me plz
Aha! I just did the problem and it worked out fine. Yeah the derivitive of the confusion ;-) was simply that I thought a and b were variables and not constants. So I gave them a derivative of 1 instead of zero. Thanks for your help ryos! You RYOCK! hehehe! :-P
The stuff I come up with? Or are you talking to yourself like all mathematicians do! Anyways I didn't invent that problem if thats what your thinking.
Mathematical convention. In the expression ax, a is the coefficient of x.
Well I guess we must assume a and b are constants. I don't think we can differentiate with more then two variables.
And btw something thats also confusing me. If we differentiate:
Hmm... I'll have to review the chain rule. But isn't that what I did? The derivative of bx is b * the derivitive of x (which is 1) + x * the derivitive of b (which is also 1) so it should be e^u (x + b) right?
Nope. (e^bx)′ = (e^u)′(bx)′ = be^bx. (That's the chain rule.) The same goes for e^ax.
I just can't get this one to work.