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Mathematics 23 Online
OpenStudy (anonymous):

Find dy/dx of ln(xy) = e^(x+y) I'm having trouble solving for y' after taking the derivative, could someone please lend me a hand?

OpenStudy (luigi0210):

What did you get after you took the derivative?

OpenStudy (anonymous):

y'/(xy) = e^(x+y)*(1+y').. I've been out of the math game for a while so I'm struggling to set one side = to y'

OpenStudy (luigi0210):

Wouldn't xy be product rule?

OpenStudy (anonymous):

Uhh I used the chain rule am I wrong on that part?

OpenStudy (luigi0210):

Actually, I think it would be easier to just make it \(\Large ln(xy)=lnx+lny\)

OpenStudy (anonymous):

What rule allows that? Sorry if it's obvious hahah

OpenStudy (luigi0210):

http://www.mathwords.com/l/logarithm_rules.htm

OpenStudy (luigi0210):

The Product one ^

OpenStudy (anonymous):

Okay thanks! Makes sense :) Let me try it from here

OpenStudy (anonymous):

Nope hahaha I couldn't figure out how to set y' on one side... It's been a while since I've taken a math class so I'm bad

OpenStudy (anonymous):

I think using the log product rule I can get it though this seems easier

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