`(1-x^2)(1-y)dx=x y(1+y)dy` y 4. (1 - x?) (1 - y) dx = xy (1 + y) dy HD

To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW `(1-x^2)(1-y)dx=x y(1+y)dy` y 4. (1 - x?) (1 - y) dx = xy (1 + y) dy