《多元函數(shù)求解》word版

1、.MATLAB的計(jì)算結(jié)果 syms x y;x,y=solvesym'x2+y2=0',sym'75*x3/100-y+9/10=0'x=vpax,4y=vpay,4eval'x.2+y.2',eval'75*x.3/100-y+9/10' x = 0.1934 - 0.6951*i 0.4388*i - 1.073 1.134*i + 0.8793 - 0.4388*i - 1.073 0.6951*i + 0.1934 0.8793 - 1.134*iy = 0.1934*i + 0.6951 1.073*i + 0.4388

2、 0.8793*i - 1.134 0.4388 - 1.073*i 0.6951 - 0.1934*i - 0.8793*i - 1.134ans = 1.8367099231598242312020508394098*10-40*i - 1.8367099231598242312020508394098*10-40, 1.7189575831866919927054801534962*10-40*i + 1.8367099231598242312020508394098*10-40 2.3877229001077715005614960912327*10-39*i - 7.34683969

3、2639296924804603357639*10-40, - 3.3656917645517268156994122716272*10-39*i - 1.8367099231598242312020508394098*10-40 3.6734198463196484624023016788195*10-39*i + 1.1020259538958945387206905036459*10-39, 5.27862020829676029479556374219*10-39*i - 3.8570908386356308855224167627605*10-39 - 2.3877229001077

4、715005614960912327*10-39*i - 7.346839692639296924804603357639*10-40, 3.3656917645517268156994122716272*10-39*i - 1.8367099231598242312020508394098*10-40 - 1.8367099231598242312020508394098*10-40*i - 1.8367099231598242312020508394098*10-40, 1.8367099231598242312020508394098*10-40 - 1.7189575831866919

5、927054801534962*10-40*i 1.1020259538958945387206905036459*10-39 - 3.6734198463196484624023016788195*10-39*i, - 5.27862020829676029479556374219*10-39*i - 3.8570908386356308855224167627605*10-39 syms a b x y;q=solve'x2+a*x2+6*b+3*y2=0','y=a+x+3','x','y'q.xq.y q = x: 2x1

6、 sym y: 2x1 symans = 4*a + 31/2*- 15*a - 8*b - 2*a*b - 7*a2 - a3 - 91/2 + a2 + 3/a + 4 - a - 3 4*a - 31/2*- 15*a - 8*b - 2*a*b - 7*a2 - a3 - 91/2 + a2 + 3/a + 4 - a - 3ans = 4*a + 31/2*- 15*a - 8*b - 2*a*b - 7*a2 - a3 - 91/2 + a2 + 3/a + 4 4*a - 31/2*- 15*a - 8*b - 2*a*b - 7*a2 - a3 - 91/2 + a2 + 3/

7、a + 4 MuPAD的計(jì)算結(jié)果更好solvex2+a*x2+6*b+3*y2=0,y=a+x+3,x,ymathematics的計(jì)算結(jié)果1弧度/實(shí)數(shù)輸入solvex2+a x2+6 b+3 y2=0, y=a+x+3解 1 x&=2 a2-12 a3-84 a2-24 a b-180 a-96 b-108+8 a+62 a+8-a-3 y&=2 a2-12 a3-84 a2-24 a b-180 a-96 b-108+8 a+62 a+8, -108-12 a3-24 a b-84 a2-96 b-180 a0 and a-4解 2 x&=2 a2+-12 a3-84 a2-24 a b-180 a-96 b-108+8 a+62 a+8-a-3 y&=2 a2+-12 a3-84 a2-24 a b-180 a-96 b-108+8 a+62 a+8, -108-12 a3-24 a b-84 a2-96 b-180 a0 and a-4解 3, -108-12