MPPET 1993 BIT Ranchi 1982 Hindusta: trig integral ∫ (1+cos^2(x)/sin^2(x) dx

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multivariable Let w=x^2y-xy^3 where x=cos(t) & y=e^t. Find dw/dt & its value when t=0.

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00 Introduction

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1st/2parts: Linear interpolation (2 given points)

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2nd way: Evaluate ∫ 1/√(1-e^(2x)) dx

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UC Davis: #9 exp integral ∫x 3^(x^2+1) dx

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