化简 2i^6+(2/(-i))^3+5i^{-5}-12i

解答

化简

2 i^{6} + (\frac{2}{- i})^{3} + 5 i^{- 5} - 12 i

- 2 - 25 i

求解步骤

2 i^{6} + (\frac{2}{- i})^{3} + 5 i^{- 5} - 12 i

2 i^{6} = - 2

(\frac{2}{- i})^{3} = - 8 i

5 i^{- 5} = - 5 i

= - 2 - 8 i - 5 i - 12 i

- x^{2} + 1 \geq 1

s im pl i f y \frac{( 3 ab ) ^{3} \cdot ( - 2 a b ^{4} )}{6 a b ^{2}}

7 x - 2 x - 5 = 0

4 x^{2} \geq 2 x + 2

e^{x} = 5