найдите область определение функцииа)y=3/x+1b)f(x)=под корнем 3-x. Created by goodgame00. algebra-ru

x+1b)f(x)=под корнем 3-x...

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July 2022 1 7 Report

найдите область определение функции
а)y=3/x+1
b)f(x)=под корнем 3-x

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$1)\quad y=\frac{3}{x+1}\\\\OOF:\; \; x+1\ne 0\; ,\; \; \; x\ne -1\\\\x\in D(y)=(\infty ,-1)\cup (-1,+\infty )\\\\2)\quad f(x)=\sqrt{3-x}\\\\OOF:\; \; \; 3-x \geq 0\; ,\; \; \; 3 \geq x\; ,\; \; \; x \leq 3\\\\x\in D(f)=(-\infty ,3\, ]$

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