tex]|>2 тема- неравенство с модулями,9класс...

July 2022 1 9 Report

помогите пожалуйста, алгоритм решения не понятен
|x-3|*|[tex] \frac{3x}{x-3} [/tex]|>2
тема- неравенство с модулями,9класс

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NNNLLL54

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$|x-3|\cdot |\frac{3x}{x-3}|=\frac{|x-3|\cdot |3x|}{|x-3|}=|3x|,\; \; \; |x-3|\ne 0,\; \to \; x\ne 3\\\\|3x|>2\\\\|3x|= \left \{ {{3x,x \geq 0} \atop {-3x2,\; \; x>\frac{2}{3}\\\\2)\; x2,\; \; \to \; \; 3x$

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dany ploshad i radius opisannoj okruzhnosti pryamougolnogo treugolnikacherez nih

otkuda beryotsya obvedyonnaya formula

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deti tashat sani po gladkomu rovnomu ldutak chto skorost sanej proporcionalna

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