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受欢迎的代数 >

24t-0.48t^2=0

解答

24 t - 0.48 t^{2} = 0

解答

t = 0, t = 50

求解步骤

24 t - 0.48 t^{2} = 0

在两边乘以

100

2400 t - 48 t^{2} = 0

改写成标准形式

a x^{2} + b x + c = 0

- 48 t^{2} + 2400 t = 0

使用求根公式求解

t_{1, 2} = \frac{- 2400 \pm 240 0 ^{2} - 4 ( - 48 ) \cdot 0}{2 ( - 48 )}

240 0^{2} - 4 (- 48) \cdot 0 = 2400

t_{1, 2} = \frac{- 2400 \pm 2400}{2 ( - 48 )}

将解分隔开

t_{1} = \frac{- 2400 + 2400}{2 ( - 48 )}, t_{2} = \frac{- 2400 - 2400}{2 ( - 48 )}

t = \frac{- 2400 + 2400}{2 ( - 48 )} : 0

t = \frac{- 2400 - 2400}{2 ( - 48 )} : 50

二次方程组的解是:

t = 0, t = 50

作图

流行的例子

3/4 x[ 2/7+5/8 ]= 3/4 (x^2)/7

\frac{3}{4} x [\frac{2}{7} + \frac{5}{8}] = \frac{3}{4} \frac{x ^{2}}{7}

17 x^{2} - 40 x + 8 = 0

9x^2+8(k-5)x+64=0

9 x^{2} + 8 (k - 5) x + 64 = 0

solvefor t,s=v_{0}*t+a*t^2

so l v e f or t, s = v_{0} \cdot t + a \cdot t^{2}

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