Math Chapter Wise Ordinary And Partial Differential Equations, Integral Equations And Calculus Of Variations English MCQ UP PCS (Pre) 2006 Q.The solution of the differential equation (1+y2)dx = (tan–1 y–x)dy is: A() 1 tan y 1 e x 1 tan y c − − − + − = B() 1 tan y 1 e x 1 tan y c − + − = C() 1 tan y 1 e x 1 tan y c − + + = D() 1 tan y 1 e x 1 tan y c − − − + − = Show answer Correct answer: () 1 tan y 1 e x 1 tan y c − + − =