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受欢迎的代数 >

solvefor x,f={0.25x^2}

解答

求解

x, f = {0.25 x^{2}}

解答

x = 2 f, x = - 2 f

求解步骤

f = {0.25 x^{2}}

交换两边

{0.25 x^{2}} = f

两边除以

0.25

x^{2} = 4 f

对于

x^{2} = f (a)

解为

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

x = 4 f, x = - 4 f

化简

4 f : 2 f

化简

- 4 f : - 2 f

x = 2 f, x = - 2 f

作图

流行的例子

21000=0.68*22*x*(2.5)/(1.4)*(54-0.4x)

21000 = 0.68 \cdot 22 \cdot x \cdot \frac{2.5}{1.4} \cdot (54 - 0.4 x)

\frac{y ^{2}}{2} - 3 = y + 1

quadraticformula (x^2-6)/2-(x^2+4)/4 =5

q u a d r a t i c f or m u l a \frac{x ^{2} - 6}{2} - \frac{x ^{2} + 4}{4} = 5

因式分解 5x^2=40x

f a c t or 5 x^{2} = 40 x

x=0.55*(6.71-x*0.75)^2

x = 0.55 \cdot (6.71 - x \cdot 0.75)^{2}