IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: Dania on October 03, 2010, 08:28:36 pm

Title: Rate of Change
Post by: Dania on October 03, 2010, 08:28:36 pm

1) (a) Variables x and y are related by the equation y= 5x+2

i) Find the approximate change in y when x increases from 0 to p, where p is small.

(b) A square of area A cm² has a side of length x cm. Given that the area is increasing at a constant rate of 0.5cm²s^-1. Find the rate of increase of x when A =9.

Help, please :)

Title: Re: Rate of Change
Post by: S.M.A.T on October 03, 2010, 11:33:59 pm

here :)