Assume that x and y are both differentiable functions of t and find the required values of dy/dt and dx/dt. xy = 4 (a) Find dy/dt, given x = 8 and dx/dt = 10. dy/dt =  (b) Find dx/dt, given x = 1 and dy/dt = –7. dx/dt =

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Assume that x and y are both differentiable functions of t and find the required values of dy/dt and dx/dt.

xy = 4
(a) Find dy/dt, given x = 8 and dx/dt = 10.
dy/dt = 

(b) Find dx/dt, given x = 1 and dy/dt = –7.
dx/dt = 
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