Question: If a + y = 81 and dx/dt = 4, find dy/dt when y is positive and (a) x = 0: dy/dt = (b)

If a + y = 81 and dx/dt = 4, find dy/dt

 

If a + y = 81 and dx/dt = 4, find dy/dt when y is positive and (a) x = 0: dy/dt = (b) x = 2: dy/dt = (c) x = 4: dy/dt =

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