Math Help

[Loco-Deer-Slayer]

I hate to make this thread but webwork is killing me right now and I cannot figure out what I 'm doing wrong.
Problem:
If y = (3x)^3x find Dxy (pretty much just derive it)
I'm using natural logs to drop the 3x and then deriving from there.
My solution: y[3+3ln(3x)]
HUGE karma given to anyone who can tell me what the solution is

 

[LeadThug420]

http://www.wolframalpha.com/input/?i=derivative+of++%283x%29%5E%283x%29

 

[LeadThug420]

If you're in a class higher than calc 3, what I just gave you probably isn't what you wanted.

 

[I_Am_Mod]

http://www.wolframalpha.com

solves all math, and other life problems ....

 

[zerospinskier]

O yeah the new school year started, I should bump the Khan Academy thread.

Go here. Follow along with his lectures for the material you are learning in class, and I guarantee you will understand it.
http://www.khanacademy.org/

 

[a_pla5tic_bag]

only thing i have to contribute about math is that I no longer have to take it. I'm all like

imagine those other panels are filled with stuff.

 

[Mr.Luke]

officially the greatest website ever

 

[Loco-Deer-Slayer]

Oh yeah I forgot about Wolf... I figured it out.
Webwork is a FUCKER.
Gracias for the help though guys.

 

[a_pla5tic_bag]

no but i here you online homework sucks. especially chem stuff, thank god organic chem does'n't have any. you know how annoying the questions would be?

 

[BigJew]

I don't follow your notation. Is Dxy the partial derivative with respect to x and y?

 

[Loco-Deer-Slayer]

Haha yeah I had Chem online too. Typing in chemical reactions including their states of matter was always a bitch.
Out of math, physics, and chem... physics is the biggest boner kill to use online.

 

[Loco-Deer-Slayer]

Dxy = dx/dy

 

[burntahoegreen]

(dy)/(dx)= 9*(lnx+1)*x^(3x)
took deriv of 3x^(3x) on my ti-89i think you are going to need to do a 'u' substitution, where let u=3x. Not quite sure on how to get the answer been a while since ive done calculus