Question

四元二次方程组求解

a+c=2
b+d+ac=-27
bc+ad=-44
bd=7联立

Answer 1

一共六组解，如下：
{a -> 1.60329, b -> -0.255657, c -> 0.396715, d -> -27.3804},
{a -> 5.2886, b -> -0.794223, c -> -3.2886, d -> -8.81364},
{a -> -3.2886, b -> -8.81364, c -> 5.2886, d -> -0.794223},
{a -> 0.396715, b -> -27.3804, c -> 1.60329, d -> -0.255657},
{a -> 7.18417, b -> 9.50767, c -> -5.18417, d -> 0.736248},
{a -> -5.18417, b -> 0.736248, c -> 7.18417, d -> 9.50767}