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 >

-2.7=(5-t)/(t^2-9)

解答

- 2.7 = \frac{5 - t}{t ^{2} - 9}

解答

t = - \frac{- 5 + 2 1309}{27}, t = \frac{5 + 2 1309}{27}

+1

十进制

t = - 2.49482 \dots, t = 2.86519 \dots

求解步骤

- 2.7 = \frac{5 - t}{t ^{2} - 9}

在两边乘以

t^{2} - 9

- 2.7 (t^{2} - 9) = 5 - t

解

- 2.7 (t^{2} - 9) = 5 - t : t = - \frac{- 5 + 2 1309}{27}, t = \frac{5 + 2 1309}{27}

t = - \frac{- 5 + 2 1309}{27}, t = \frac{5 + 2 1309}{27}

验证解

找到无定义的点（奇点）:

t = 3, t = - 3

将不在定义域的点与解相综合:

t = - \frac{- 5 + 2 1309}{27}, t = \frac{5 + 2 1309}{27}

作图

流行的例子

solvefor S= C/(1-r),r

so l v e f or S = \frac{C}{1 - r}, r

x^2+(x/((x+1)))^2=3

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

(1/(4x))^2-3x-12=0

(\frac{1}{4 x})^{2} - 3 x - 12 = 0

\frac{x}{3 x - 5} = 6 x + 2

(x-2)/x = 12/20

\frac{x - 2}{x} = \frac{12}{20}