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受欢迎的代数 >

(13)/x =10-x

解答

\frac{13}{x} = 10 - x

解答

x = 5 - 23, x = 5 + 23

+1

十进制

x = 1.53589 \dots, x = 8.46410 \dots

求解步骤

\frac{13}{x} = 10 - x

在两边乘以

x

13 = 10 x - x^{2}

解

13 = 10 x - x^{2} : x = 5 - 23, x = 5 + 23

x = 5 - 23, x = 5 + 23

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 = 5 - 23, x = 5 + 23

作图

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