यदि $x=a$ एक बहुपद समीकरण $f(x)=0$ का दो बहुलता (multiplicity two) वाला मूल है,तो

  • A
    $f^{\prime}(a)=f^{\prime \prime}(a)=0$
  • B
    $f^{\prime \prime}(a)=f(a)=0$
  • C
    $f^{\prime}(a) \neq 0 \neq f^{\prime \prime}(a)$
  • D
    $f(a)=f^{\prime}(a)=0 ; f^{\prime \prime}(a) \neq 0$

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