Question

by u.v method solve tanx.cotx
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Answer 1

Explanation:

Let y=tanx.cotx

Or dy/dx=d/dx(tanx.cotx)

Or dy/dx=cotx.d/dx(tanx)+tanx.d/dx(cotx)

Or dy/dx=sec^2x.cotx+tanx(-cosec^2x)

Or dy/dx=(1/cos^2x)×cosx/sinx-(1/sin^2)×sinx/cosx

or dy/dx=1/(sinx.cosx)-1/(sin.cosx)

Or dy/dx=0.

Hope this helps mate ☺️.