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受欢迎的代数 >

512=x^3

解答

512 = x^{3}

解答

x = 8, x = - 4 + 43 i, x = - 4 - 43 i

求解步骤

512 = x^{3}

交换两边

x^{3} = 512

对于

x^{3} = f (a)

解为

x = 3 f (a), 3 f (a) \frac{- 1 - 3 i}{2}, 3 f (a) \frac{- 1 + 3 i}{2}

x = 3512, x = 3512 \frac{- 1 + 3 i}{2}, x = 3512 \frac{- 1 - 3 i}{2}

3512 = 8

化简

3512 \frac{- 1 + 3 i}{2} : - 4 + 43 i

化简

3512 \frac{- 1 - 3 i}{2} : - 4 - 43 i

x = 8, x = - 4 + 43 i, x = - 4 - 43 i

作图

流行的例子

z^{4} + i z^{2} + 2 = 0

8x^3-52x^2+78x-27=0

8 x^{3} - 52 x^{2} + 78 x - 27 = 0

3 x^{3} + 48 = 0

1/6 a^4=1,a^2=1

\frac{1}{6} a^{4} = 1, a^{2} = 1

4 x^{3} + 8 x = 0