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If f is twice differentiable such that f"(x)=-f(x) `f'(x)=g(x),h'(x)=[f(x)]^(2)+[g(x)]^(2)andh(0)=2,` `h(1)=4,` then the equation y=h(x) represents.

A

a straight line with slope (-2)

B

a straight line with y-intercept 1

C

a straight line with x-intercept 2

D

None of the above

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The correct Answer is:
D
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