Question

Find roots of the derivative of this function, AKA find the critical numbers.

http://gyazo.com/105937b10ff6e651cd9c0109b42f69d7

Answer 1

y= 45t^(2/3) + 9t^(5/3)

what is your derivative?

Answer 2

(2/3)(45t^-1/3)+(5/3)9t^(2/3)

Answer 3

or simplified a little:
y' = 30t^(-1/3) +15t^(2/3)

Answer 4

yh

Answer 5

now what is the GCF? i need help getting that

Answer 6

GCF?

Answer 7

greatest common factor

Answer 8

right, i know what it is.. what do you want it for?

Answer 9

to get the roots of the equation.

Answer 10

meant, the roots of the derivative of the equation

Answer 11

hmm, try this http://screencast.com/t/x2XmDKdl

Answer 12

figured it out, thanks