Question

Let P(x) = F(x)G(x) and Q(x) = F(x)/G(x), where F and G are the functions whose graphs are shown.

http://www.webassign.net/scalcet7/3-2-050.gif

(a) Find P '(2). (b) Find Q'(7).

Answer 1

what are P'(x) ,Q'(x) first ?

Answer 2

(in general.. use F(x),F'(x),G(x),G'(x))

Answer 3

I'm not sure how to find F'(x)

Answer 4

no.. we dont need it right now i just want you to write P'(x) in terms of F(x),F'(x),G(x),G'(x)

Answer 5

f(x)g'(x)+g(x)f'(x)

Answer 6

good ..
now lets look at F(2)
what its value ? what do you think about F'(2) [remember derivatives gives you the SLOPE at the point]

Answer 7

are you there ?