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受欢迎的代数 >

3/(2b)=20-b

解答

\frac{3}{2 b} = 20 - b

解答

b = \frac{20 - 394}{2}, b = \frac{20 + 394}{2}

+1

十进制

b = 0.07528 \dots, b = 19.92471 \dots

求解步骤

\frac{3}{2 b} = 20 - b

在两边乘以

b

\frac{3}{2} = 20 b - b^{2}

解

\frac{3}{2} = 20 b - b^{2} : b = \frac{20 - 394}{2}, b = \frac{20 + 394}{2}

b = \frac{20 - 394}{2}, b = \frac{20 + 394}{2}

验证解

找到无定义的点（奇点）:

b = 0

将不在定义域的点与解相综合:

b = \frac{20 - 394}{2}, b = \frac{20 + 394}{2}

作图

流行的例子

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