defence exam Army Havildar SAC Mock Test Series 2025 Mathematics Differential Equations Solution of Differential Equations
Let f : (0, ∞) → R be a function which is differentiable at all points of its domain and satisfies the condition x2 f '(x) = 2xf(x) + 3, with f(1) = 4. Then 2f(2) is equal to:
1
29
2
19
3
39
4
23