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Question
Find `(dy)/(dx)` at x = 1, y = `pi/4` if `sin^2 y + cos xy = K`
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Solution
Consider the differential equation sin2y + cosxy = K
Differentiate the above differential equation with respect to x, to get the value of `(dy)/(dx)`
`=> d/dx (sin^2 y) + d/dx (cos xy) = d/(dx) (K)`
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