Teaching HTET PGT Level 3 - 2024 Mock Test Mathematics Differential Equations Solution of Differential Equations
एक अवकल समीकरण जिसका हल y = a cos x + b sin x है, वह _________है।
1
\(\rm\frac{d^2y}{dx^2}\) + y = 0
2
\(\rm\frac{d^2y}{dx^2}\) − y = 0
3
\(\rm\frac{d^2y}{dx^2}\) + (a + b) y = 0
4
\(\rm\frac{d^2y}{dx^2}\) + (a − b) y = 0