Question

methods of variation

Answer 1

$\mathfrak\red{Answer - }$

variation of parameters, also known as variation of constants, is a general method to solve inhomogeneous linear ordinary differential equations.

where p and q are constants and f(x) is a non-zero function of x. The complete solution to such an equation can be found by combining two types of solution: The general solution of the homogeneous equation d2ydx2 + pdydx + qy = 0.