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If the solution of the differential equation y( 1 + 2 xy sec^(2) (x^(2) -y)) dx - (x + y^2 sec^(2) ( x^(2)-y)) dy =0 is f(x,y)=c ( where c is integration constant ) , then f(2,1) is equal to |
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Answer» `2- TAN 3 ` |
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