$$$f{\left(x \right)} = x - 2$$$$$$g{\left(x \right)} = \frac{1}{x}$$$的和、差、积与商

该计算器将求出函数 $$$f{\left(x \right)} = x - 2$$$$$$g{\left(x \right)} = \frac{1}{x}$$$ 的和、差、乘积和商,并显示步骤。

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您的输入

$$$f{\left(x \right)} = x - 2$$$$$$g{\left(x \right)} = \frac{1}{x}$$$的和、差、积和商。

解答

$$$\left(f + g\right)\left(x\right) = {\color{red}\left(x - 2\right)} + {\color{red}\left(\frac{1}{x}\right)} = \frac{\left(x - 1\right)^{2}}{x}$$$

$$$\left(f - g\right)\left(x\right) = {\color{red}\left(x - 2\right)} - {\color{red}\left(\frac{1}{x}\right)} = x - 2 - \frac{1}{x}$$$

$$$\left(f\cdot g\right)\left(x\right) = {\color{red}\left(x - 2\right)}\cdot {\color{red}\left(\frac{1}{x}\right)} = \frac{x - 2}{x}$$$

$$$\left(\frac{f}{g}\right)\left(x\right) = \frac{{\color{red}\left(x - 2\right)}}{{\color{red}\left(\frac{1}{x}\right)}} = x \left(x - 2\right)$$$

答案

$$$\left(f + g\right)\left(x\right) = \frac{\left(x - 1\right)^{2}}{x}$$$A

$$$\left(f - g\right)\left(x\right) = x - 2 - \frac{1}{x}$$$A

$$$\left(f\cdot g\right)\left(x\right) = \frac{x - 2}{x}$$$A

$$$\left(\frac{f}{g}\right)\left(x\right) = x \left(x - 2\right)$$$A


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