मराठी

For \[f(x)=3x^4+4x^3-12x^2+12\], what conclusion follows at \[x=1\]?

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प्रश्न

For \[f(x)=3x^4+4x^3-12x^2+12\], what conclusion follows at \[x=1\]?

पर्याय

  • Local minimum value \[=-20\] at \[x=1\]

  • Local maximum value \[=12\] at \[x=1\]

  • Local minimum value \[=7\] at \[x=1\]

  • Local maximum value \[=7\] at \[x=1\]

MCQ
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उत्तर

Since \[f''(1)=36>0\], \[x=1\] is a point of local minimum. Substitution gives \[f(1)=3+4-12+12=7\].

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