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受欢迎的代数 >

36(n/(n+1))=n^2+n

解答

36 (\frac{n}{n + 1}) = n^{2} + n

解答

n = 0, n = 5, n = - 7

求解步骤

36 (\frac{n}{n + 1}) = n^{2} + n

化简

36 (\frac{n}{n + 1}) : \frac{36 n}{n + 1}

\frac{36 n}{n + 1} = n^{2} + n

在两边乘以

n + 1

36 n = n^{2} (n + 1) + n (n + 1)

解

36 n = n^{2} (n + 1) + n (n + 1) : n = 0, n = 5, n = - 7

n = 0, n = 5, n = - 7

验证解

找到无定义的点（奇点）:

n = - 1

将不在定义域的点与解相综合:

n = 0, n = 5, n = - 7

作图

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