Question

Just want an answer checked:
Find the derivative of the function given below.
y = (3x4 – 3x + 5)^-3

Answer 1

\[-3 x (\frac{ 4x^3-3 }{ (3x^4-3x+5)^-4 }\]

Answer 2

that's not a -3x, it's -3 times the fraction.

Answer 3

why is there 3x multiplied ?

Answer 4

then you are correct!

Answer 5

yay~~~ :)

Answer 6

there should be 12 x^3 in place of 4x^3

Answer 7

why?

Answer 8

it should be 12x^2 shouldnt it?

Answer 9

can you write correct answer for us

Answer 10

12x^3, i see why.

Answer 11

-3*(4x-3) will give -12x^3 +9
@uzumakhi

Answer 12

i didn't do out the derivative, i get it.

Answer 13

so i was right to begin with?

Answer 14

now im confused.. was my answer okay in the first place?

Answer 15

\[-3(\frac{ 12x ^{3}-3 }{ (3x ^{4}-3x + 5)^{4} })\]

Answer 16

recheck your answer with my answer then you find your mistakes

Answer 17

oh , yes.....sorry! u missed the 3 @uzumakhi is correct.
sorry for confusion :(

Answer 18

no i have the same now because when you take the derivative of 3x^4-3x+5 it is 12x^3-3,
i forgot to place my power rule on my 3x^4

Answer 19

that i want to tell in begining

Answer 20

i gotcha!

Answer 21

ok your wlcome