point moves along a curve y=2x^2+1 in such a way that the y value is decreasing at the rate of 2 units per sec. at what rate is x changing when x=3/2.
y' = 4x so F'(3/2)= m = 6
so slope=6 and f(3/2) = y= 11/2
point slope formula = y-(11/2) = 6(x-(3/2)) = y= 12x/2 -7/2
so do I set x=0 to find rate of change for x?
nope. implicit differentiation is what is needed here. what you are doing is for a whole other class of problem. are you sure you're getting what's going on in class?Originally Posted by weezie23
..............differentiate with respect to time
now, you are told, you are asked for
, just solve for it
  |
LinkBack URL
About LinkBacks