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19/04/2020 1:05 pm

Let y = y(x) be a function of x satisfying y√(1 - x^{2}) = k - x√(1 - y^{2}) where k is a constant and y(1/2) = - 1/4. Then dy/dx at x = 1/2, is equal to

(a) √5/2

(b) -√5/2

(c) 2/√5

(d) -√5/4

This topic was modified 8 months ago by puja

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