Q. 104.2( 66 Votes )

Find dy/dx in the following:


Answer :

It is given that:


Assumption: Let x = tan θ, putting it in y, we get,



we know by the formula that,

Putting this in y, we get,

y = tan-1(tan3θ)

y = 3(tan-1x)

Differentiating both sides, we get,




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