Revision Paper 7: Differentiation II
Q1
Q2
Two variables are related by the equation
.
(a)
Find
(b)
Find the rate of change of x at the instant when x = 1 given that y is increasing at a rate of 3
units per second.
Given that ,
.
find the value of
when x

20. During the war with Iraq in 1991, the Terraco Motor Company produced a lightweight,
allterrain vehicle codenamed "EBTerra for the military. The companvr is now planning to
sell the Terra to the public. It has five plants that manufacture the vehicle a