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 >

1/((3n+2)^2)=0.005

解答

\frac{1}{( 3 n + 2 ) ^{2}} = 0.005

解答

n = \frac{10 2 - 2}{3}, n = \frac{- 10 2 - 2}{3}

+1

十进制

n = 4.04737 \dots, n = - 5.38071 \dots

求解步骤

\frac{1}{( 3 n + 2 ) ^{2}} = 0.005

在两边乘以

(3 n + 2)^{2}

1 = 0.005 (3 n + 2)^{2}

解

1 = 0.005 (3 n + 2)^{2} : n = \frac{10 2 - 2}{3}, n = \frac{- 10 2 - 2}{3}

n = \frac{10 2 - 2}{3}, n = \frac{- 10 2 - 2}{3}

验证解

找到无定义的点（奇点）:

n = - \frac{2}{3}

将不在定义域的点与解相综合:

n = \frac{10 2 - 2}{3}, n = \frac{- 10 2 - 2}{3}

作图

流行的例子

2 = \frac{4}{1 - r}

(3k)/(7k)= C/(C+1470)

\frac{3 k}{7 k} = \frac{C}{C + 1470}

(x-1)/(x+1)= 5/6

\frac{x - 1}{x + 1} = \frac{5}{6}

- \frac{2}{5 y} = 4

a^{- 2} = \frac{1}{16}