Question
A point is moving along the graph of y = 11(1+x2) so that dx/dt = 2 centimeters per minute. Find dy/dt for the following values of x.
(a) X = -2 (b) X = 0
(c)X=2 (d)X=10
(a) X = -2 (b) X = 0
(c)X=2 (d)X=10
Answers
Reiny
I will assume you meant
y = 11(1+x^2)
y = 11 + 11x^2
dy/dt = 22x dx/dt = 44x cm/s
I will do a), you do the rest
when x = -2
dy/dt = 44(-2) = -88 cm/s
y = 11(1+x^2)
y = 11 + 11x^2
dy/dt = 22x dx/dt = 44x cm/s
I will do a), you do the rest
when x = -2
dy/dt = 44(-2) = -88 cm/s