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OpenStudy (anonymous):
A ladder 5m long leans against a house, find the rate at which, 1. the top of the ladder is moving downward if its foot is 3m from the house and moving away at the rate of 0.5m/sec 2.the slope of the ladder decreases
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OpenStudy (sriram):
x^2 + y^2=25 differentiate wrt t 2x.dx/dt +2y.dy/dt=0 2*3*0.5+2*4*dy/dt=0 dy/dt=-3/8 means coming down by vel. 3/8
OpenStudy (sriram):
wat is d 2nd question exactly?
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