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受欢迎的代数 >

x^{-2}= 1/(x^2)

解答

x^{- 2} = \frac{1}{x ^{2}}

解答

x \neq = 0

求解步骤

x^{- 2} = \frac{1}{x ^{2}}

整理后得

\frac{1}{x ^{2}} = \frac{1}{x ^{2}}

两边减去

\frac{1}{x ^{2}}

\frac{1}{x ^{2}} - \frac{1}{x ^{2}} = \frac{1}{x ^{2}} - \frac{1}{x ^{2}}

化简

0 = 0

两侧相等

对所有 x 为真

验证解

找到无定义的点（奇点）:

x = 0

因为方程对以下值无定义:

0

x \neq = 0

作图

流行的例子

(45x+15)/(5+x)=5x-5

\frac{45 x + 15}{5 + x} = 5 x - 5

solvefor F, d/F =j

so l v e f or F, \frac{d}{F} = j

\frac{4}{x} = \frac{x}{16}

5/(z-4)-2/(z+4)=0

\frac{5}{z - 4} - \frac{2}{z + 4} = 0

(x+1)/8 = 6/(x-1)

\frac{x + 1}{8} = \frac{6}{x - 1}