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## jessiedeee 2 years ago find the derivative of the function…. f(t)=-8t^5 help please?

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1. muhammad9t5

okk let me try.

2. ParthKohli

Do you know how to use Power Rule?

3. Sheng

power rule for this one :o

4. jessiedeee

yes I do…well sort of…

5. Sheng

bring down the exponent, then subtract by 1 from the exponent :)

6. ParthKohli

$\rm f'(t) = 5\cdot 8t^{5 - 1}$OK, I set it up for you.

7. jessiedeee

isn't the 8 supposed to be negative?

8. muhammad9t5

|dw:1350750988263:dw|

9. Sheng

yes should be -8, still same rules, bring down 5 and subtract 1 from exponent, 5*-8^(5-1)

10. Sheng

5*-8t^(5-1)

11. muhammad9t5

can you tell us answer?

12. jessiedeee

so it would be -40^4??

13. Sheng

-40t^4

14. Sheng

yes you got it jessie, but dont forget the t :)

15. jessiedeee

ahh yes than you !

16. jessiedeee

how about finding the derivative of this one?? 6 sqrtx + 3 ^3sqrtx ?

17. baldymcgee6

Post it in a new question, and I will help you.

18. jessiedeee

|dw:1350751432663:dw|

19. jessiedeee

ok

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