zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的代数 >

x/4 = 8/(2x)

解答

\frac{x}{4} = \frac{8}{2 x}

解答

x = 4, x = - 4

求解步骤

\frac{x}{4} = \frac{8}{2 x}

使用分式交叉相乘

x^{2} = 16

解

x^{2} = 16 : x = 4, x = - 4

x = 4, x = - 4

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 = 4, x = - 4

作图

流行的例子

\frac{8}{3} = \frac{7}{k - 2}

a (\frac{1}{a}) = 1

(log_{2}(8))/A =60

\frac{lo g _{2} ( 8 )}{A} = 60

(7-3)/(k-2)= 2/3

\frac{7 - 3}{k - 2} = \frac{2}{3}

38000= 1/(2mv^2)

38000 = \frac{1}{2 m v ^{2}}