Question

Log differentiation?

Answer 1

My answer http://www.wolframalpha.com/input/?i=differentiate+y%3Dx%5E%282%2Fx%29

Answer 2

But which one matches the one from wolfram?

Answer 3

I really think it is a.

Answer 4

you are trying to differentiate
\[y=x^{\frac{2}{x}}\]

Answer 5

yep

Answer 6

what did you do so far?

Answer 7

typed in wolfram.

Answer 8

hehe i mean on your own

Answer 9

if you know already the answer from wolfram why are you still needing help

Answer 10

The answer from wolfram dont match one of the choices I posted. Can you check for me

Answer 11

hmm interesting!
so wolfram given you an retriceanswer

Answer 12

Its just in a different form.

Answer 13

well you could start with \[\Large y=e^{2\frac{\ln x}{x}}\]

Answer 14

that base change performed there

Answer 15

now you can differentiate it can you not?

Answer 16

\[D(e^u)=\frac{du}{dx}e^u\]

Answer 17

chain rule

Answer 18

so it would be \[\Large y'=D(2\frac{\ln x}{x})e^{2\frac{\ln x}{x}}\]

Answer 19

D mean derivative

Answer 20

seems to me it will get to one of your answer choices