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Intersection

One root is g...

Question

One root is greater than $2$ and other smaller than $1$

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Solution

Condition I: $f (1) < 0$
$\Rightarrow$ $4 < 0$
$\Rightarrow$ $m ϵ ϕ$
Condition II: $f (2) < 0$
$\Rightarrow$ $m > 10$
Intersection gives $m ϵ ϕ$

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