-3*2+30x-75six=0

解答

- 3 \cdot 2 + 30 x - 75 s i x = 0

s = 0, x = \frac{1}{5}

求解步骤

- 3 \cdot 2 + 30 x - 75 s i x = 0

将

- 3 \cdot 2 + 30 x - 75 s i x

改写成标准复数形式:

(- 6 + 30 x) - 75 x s i

(- 6 + 30 x) - 75 x s i = 0

将

0

改写成标准复数形式:

0 + 0 i

(- 6 + 30 x) - 75 x s i = 0 + 0 i

复数仅在实部和虚部均相等时才相等改写为方程组:

[- 6 + 30 x = 0 - 75 x s = 0]

[- 6 + 30 x = 0 - 75 x s = 0] : s = 0, x = \frac{1}{5}

s = 0, x = \frac{1}{5}

w^{2} = - 40 i

- \frac{1}{z - i} - 1 - i - z = 0

+ 3 i z^{2} = - 7 + 8 i, z^{1} = 5

∣ z + 2 - i ∣ = 2

(x + y i) + (8 - 5 i) = 4 + 3 i