$f(x)$ एक दो बार अवकलनीय फलन है, इस प्रकार कि $f^{\prime \prime}(x)=-f(x)$ और $f^{\prime}(x)=g(x)$ है। यदि $h(x)=(f(x))^2+(g(x))^2$ और $h(1)=2$ है, तो $h(2)=$

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $4$

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