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受欢迎的代数 >

solvefor R,200= 1/3 piR^2H

解答

求解

R, 200 = \frac{1}{3} π R^{2} H

解答

R = \frac{10 6}{π H}, R = - \frac{10 6}{π H}; H \neq = 0

求解步骤

200 = \frac{1}{3} π R^{2} H

交换两边

\frac{1}{3} π R^{2} H = 200

在两边乘以

3

π H R^{2} = 600

两边除以

π H; H \neq = 0

R^{2} = \frac{600}{π H}; H \neq = 0

对于

x^{2} = f (a)

解为

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

R = \frac{600}{π H}, R = - \frac{600}{π H}; H \neq = 0

化简

\frac{600}{π H} : \frac{10 6}{π H}

化简

- \frac{600}{π H} : - \frac{10 6}{π H}

R = \frac{10 6}{π H}, R = - \frac{10 6}{π H}; H \neq = 0

作图

流行的例子

8 x^{2} - 23 x - 3 = 0

x^2+14x-21=10,xx^2+14x-21=10x

x^{2} + 14 x - 21 = 10, x x^{2} + 14 x - 21 = 10 x

solvefor x,log_{10}(y)=(x-2)^2

so l v e f or x, lo g_{10} (y) = (x - 2)^{2}

completesquare x^2=-9x+8

co m pl e t es q u a re x^{2} = - 9 x + 8

(- 3)^{2} + y^{2} = 7^{2}