Use the result of Exercise 15 to solve the differential equation in Exercise 11.Exercise 1...

Use the result of Exercise 15 to solve the differential equation in Exercise 11.

Exercise 15

Show that if the differential equation

M(x, y) dx + N(x, y) dy = 0 has homogeneous coefficients, then

is an integrating factor for the differential equation.

Exercise 11

In each of Exercise, show that the differential equation has homogeneous coefficients and then solve it.

(x2 – y2) dx + xy dy = 0