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if u = x 2 +y 2 +z 2 and x=e 2t , y = e 2t cos3t , z=e 2t sin3t; find du/dt?

if u = x2+y2+z2 and x=e2t, y = e2tcos3t , z=e2tsin3t; find du/dt?
 

Grade:12th pass

1 Answers

Shobhit Varshney IIT Roorkee
askIITians Faculty 33 Points
6 years ago
Hi,

du/dt = 2x * dx/dt + 2y * dy/dt + 2z * dz/dt

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