Question

the derivative for y=(x+1)(x-3)^3

Answer 1

3(x+1)(x-3)^2

Answer 2

no, you have to do product rule. you get 3(x+1)(x-3)^2 + (x-3)^3

hope that helps

Answer 3

i'm suppose to get 4x(x-3)^2??

Answer 4

yeah, so take my answer and factor out (x-3)^2. that leaves you 3(x+1) + (x-3) in the parentheses, which is 3x+3+x-3 = 4x. let me know if that doesn't make sense.
:)

Answer 5

wait what happen to the (x-3)^3 that later turned into (x-3)

Answer 6

what i did was factor out (x-3)^2 from that. both of your terms have (x-3)^2 as a common factor.

Answer 7

ok got it:)

Answer 8

good to hear, nice job.