Question
Mathematics Question on Differential Equations
If f is twice differentiable function such that f''(x) = - f(x) and f'(x) = g(x), h(x) = [f(x)]2+[g(x)]2 and h(5)=11, then h(10) =
A
22
B
11
C
15
D
21
Answer
11
Explanation
Solution
The correct answer is(B): 11