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受欢迎的代数 >

2/p+3/(p+1)=5

解答

\frac{2}{p} + \frac{3}{p + 1} = 5

解答

p = \frac{2}{5}, p = - \frac{2}{5}

+1

十进制

p = 0.63245 \dots, p = - 0.63245 \dots

求解步骤

\frac{2}{p} + \frac{3}{p + 1} = 5

乘以最小公倍数

2 (p + 1) + 3 p = 5 p (p + 1)

解

2 (p + 1) + 3 p = 5 p (p + 1) : p = \frac{2}{5}, p = - \frac{2}{5}

p = \frac{2}{5}, p = - \frac{2}{5}

验证解

找到无定义的点（奇点）:

p = 0, p = - 1

将不在定义域的点与解相综合:

p = \frac{2}{5}, p = - \frac{2}{5}

作图

流行的例子

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