Question: Given w = x^2 - y^2, x = r.w.theta, find dw/dr at point r=3 and theta = pai/4

Given w = x^2 - y^2, x = r.w.theta, find dw/dr at

Given w = x^2 - y^2, x = r.w.theta, find dw/dr at point r=3 and theta = pai/4

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