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受欢迎的代数 >

-0.16=0+1/2 (-9.8)t^2

解答

- 0.16 = 0 + \frac{1}{2} (- 9.8) t^{2}

解答

t = \frac{3.26531 E 15}{1.0 E 17}, t = - \frac{3.26531 E 15}{1.0 E 17}

+1

十进制

t = 0.18070 \dots, t = - 0.18070 \dots

求解步骤

- 0.16 = 0 + \frac{1}{2} (- 9.8) t^{2}

交换两边

0 + \frac{1}{2} (- 9.8) t^{2} = - 0.16

将

0

到右边

\frac{1}{2} (- 9.8) t^{2} = - 0.16

化简

\frac{1}{2} (- 9.8) : - \frac{9.8}{2}

(- \frac{9.8}{2}) t^{2} = - 0.16

在两边乘以

2

- 9.8 t^{2} = - 0.32

两边除以

- 9.8

t^{2} = 0.03265 \dots

对于

x^{2} = f (a)

解为

x = f (a), - f (a)

t = 0.03265 \dots, t = - 0.03265 \dots

0.03265 \dots = \frac{3.26531 E 15}{1.0 E 17}

- 0.03265 \dots = - \frac{3.26531 E 15}{1.0 E 17}

t = \frac{3.26531 E 15}{1.0 E 17}, t = - \frac{3.26531 E 15}{1.0 E 17}

作图

流行的例子

x^{2} + 3 = 10

6 x = - 15 x^{2} + 3

3 x^{2} - 1 = 2 (16 - x)

x^{2} - 30 = 3 x - 2

s^2L-s-2+5(L)+4L=4

s^{2} L - s - 2 + 5 (L) + 4 L = 4