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1. differentiate cos(3/x)2. differentiate sin(4/x) 3. differentiate 3/{sin(3x+pi)} 4. differentiate pxsin(q/x)where p and q are
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Qn: the equation of the tangent to the curve y=kx+(6/x) at the point (-2,-19) is px + qy = cfind the values of k, p, q and c
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