## alfira 2 years ago find the derivative

1. alfira

(3/x)^x

2. Dido525

Do you know how to use ln differentiation?

3. alfira

not sure

4. alfira

you mean add e into it ?

5. Dido525

No no. Remember one thing. You can only use the power rule if you have a number on the power.

6. Dido525

Since that's not the case you have to use ln differentiation.

7. Dido525

Basically it means you take the natural log of both sides.

8. alfira

e^xIn(3/x)

9. alfira

is that what you mean?

10. Dido525

So we have, |dw:1355452492770:dw|

11. Dido525

That's what I mean :P .

12. Dido525

No do you see how we get the power out?

13. Dido525

|dw:1355452563984:dw|

14. shining

put it as power of e then x e^ (3/x) result: e^(3/x) + (-3/(x)^2)*x

15. Dido525

@shining : That works too but I prefer my way. Makes more sense to me. I was never good with powers XD .

16. shining

any way satisfy you!

17. alfira

but in your way , we have to multiply it by 1/y at the end right ?

18. shining

yeah

19. alfira

got it ` thanks guys

20. Dido525

|dw:1355452766676:dw|

21. Dido525

Now take the derivative.

22. alfira

got it