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  4. Function f(x)=2 x3-21 x2+36 x-20 has local minima at x=

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Q. Function $f(x)=2 x^3-21 x^2+36 x-20$ has local minima at $x=$

Application of Derivatives

Solution:

$f^{\prime}(x)=6(x-1)(x-6)$
image
Local maxima at $x=1$
Local minima at $x=6$