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2-A-12-2x-B-3-2x-A-B-min-




Question Number 200717 by hardmath last updated on 22/Nov/23
2.  A = 12 − 2x  B = 3 + 2x  (A∙B)_(min)  = ?
$$\mathrm{2}. \\ $$$${A}\:=\:\mathrm{12}\:−\:\mathrm{2}{x} \\ $$$${B}\:=\:\mathrm{3}\:+\:\mathrm{2}{x} \\ $$$$\left({A}\centerdot{B}\right)_{\boldsymbol{{min}}} \:=\:? \\ $$
Answered by AST last updated on 22/Nov/23
A∙B=36+18x−4x^2 ⇒no min
$${A}\centerdot{B}=\mathrm{36}+\mathrm{18}{x}−\mathrm{4}{x}^{\mathrm{2}} \Rightarrow{no}\:{min} \\ $$

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