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受欢迎的代数 >

xx^3+(x/1)/(5/x)= 9/10

解答

x x^{3} + \frac{\frac{x}{1}}{\frac{5}{x}} = \frac{9}{10}

解答

x = \frac{- 1 + 91}{10}, x = - \frac{- 1 + 91}{10}, x = - \frac{1 + 91}{10}, x = - - \frac{1 + 91}{10}

求解步骤

x x^{3} + \frac{\frac{x}{1}}{\frac{5}{x}} = \frac{9}{10}

乘以最小公倍数

10 x^{4} + 2 x^{2} = 9

解

10 x^{4} + 2 x^{2} = 9 : x = \frac{- 1 + 91}{10}, x = - \frac{- 1 + 91}{10}, x = - \frac{1 + 91}{10}, x = - - \frac{1 + 91}{10}

x = \frac{- 1 + 91}{10}, x = - \frac{- 1 + 91}{10}, x = - \frac{1 + 91}{10}, x = - - \frac{1 + 91}{10}

验证解

找到无定义的点（奇点）:

x = 0

将不在定义域的点与解相综合:

x = \frac{- 1 + 91}{10}, x = - \frac{- 1 + 91}{10}, x = - \frac{1 + 91}{10}, x = - - \frac{1 + 91}{10}

作图

流行的例子

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\frac{31}{2 - 4 ( 2 x - 3 )} = \frac{1}{3 ( \frac{3}{4} - 6 x )}

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