Teaching MPPSC Assistant Professor Mock Test Series 2025 Engineering Mathematics Differential Equations Partial Differential Equations
If the particular integral of the partial differential equation (D2 + 2DD' + D'2} Z = cos(x + 2y) is k cos(x + 2y), then K = _______.
1
\(-\frac{1}{9}\)
2
\(\frac{1}{9}\)
3
\(\frac{1}{8}\)
4
\(-\frac{1}{8}\)