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受欢迎的代数 >

(-1/3)^2+y^2=1

解答

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

解答

y = \frac{2 2}{3}, y = - \frac{2 2}{3}

+1

十进制

y = 0.94280 \dots, y = - 0.94280 \dots

求解步骤

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

展开

(- \frac{1}{3})^{2} + y^{2} : \frac{1}{9} + y^{2}

\frac{1}{9} + y^{2} = 1

将

\frac{1}{9}

到右边

y^{2} = 1 - \frac{1}{9}

化简

1 - \frac{1}{9} : \frac{8}{9}

对于

x^{2} = f (a)

解为

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

y = \frac{8}{9}, y = - \frac{8}{9}

\frac{8}{9} = \frac{2 2}{3}

- \frac{8}{9} = - \frac{2 2}{3}

y = \frac{2 2}{3}, y = - \frac{2 2}{3}

作图

流行的例子

completesquare z^2+6z+10

co m pl e t es q u a re z^{2} + 6 z + 10

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