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solve non-homogeneous de y" + y = sec^2x by finding- the solution yh(x) to the equivalent...

solve non-homogeneous de y" + y = sec^2x by finding-
the solution yh(x) to the equivalent homogeneous de
the particular solution yp(x) using variation of parametrs
the general solution y(x) = yh(x) + yp(x) of the de

please explain the steps

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