Question: dy Example 2: Find - if x + xy = y 1. Then, find x at which the dx tangent line to the curve


dy Example 2: Find - if x + xy = y 1. Then, find x at which the dx tangent line to the curve defined by this equation is vertical. dy Example 3: Find if sin (xy) = y tan x. dx Example 4: If y + 1 = xy, show that y" = -2 (2y-x)
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