Teaching DSSSB TGT Mock Test 2025 Mathematics Differential Equations Formation of a Differential Equation
If y = a cos 2x + b sin 2x, then
1
\(\frac{{{d^2}y}}{{d{x^2}}} + y = 0\)
2
\(\frac{{{d^2}y}}{{d{x^2}}} + 2y = 0\)
3
\(\frac{{{d^2}y}}{{d{x^2}}} - 4y = 0\)
4
\(\frac{{{d^2}y}}{{d{x^2}}} + 4y = 0\)