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September 23, 2014

September 23, 2014

Posted by **Cassy** on Tuesday, March 9, 2010 at 12:32am.

- Calculus -
**FredR**, Tuesday, March 9, 2010 at 4:33amy = (x-2)^2

y = x^2-4x -4

dy = 2xdx - 4dx

so,

dy/dx = 2x-4

dx/dt = 2

so,

dy/dt = dy/dx dx/dt

= 2(2x-4)

= 4x-8

for x=1 then

dy/dt = 4(1)-8 = -4 units per second

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