# `sin(x + y) = 2x - 2y, (pi, pi)` Use implicit differentiation to find an equation of the tangent line to the curve at the given point.

hkj1385 | Certified Educator

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Note:- 1) If  y = sinx ; then dy/dx = cosx ;

2) If y = u + v ; where both u & v are functions of 'x' , then

dy/dx = (du/dx) + (dv/dx)

3) If y = k ; where 'k' = constant ; then dy/dx = 0

4) cos(2pi) = 1

Now,...

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