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1、MATLAB的计算结果symsxy;[x,y]=solve(sym('x^2+y^2=0'),sym('75*x^3/100-y+9/10=0'));x=vpa(x,4)y=vpa(y,4)[eval('x.^2+y.^2'),eval('75*x.^3/100-y+9/10')]x=0.1934-0.6951*i0.4388*i-1.0731.134*i+0.8793-0.4388*i-1.0730.6951*i+0.19340.8793-1.134*iy=0.1934*i+0.69511.073*i+0.43880
2、.8793*i-1.1340.4388-1.073*i0.6951-0.1934*i-0.8793*i-1.134ans=[1.8367099231598242312011508394098*10^(-40)*i-1.8367099231598242312011508394098*10^(-40),1.7189575831866919927054801534962*10^(-40)*i+1.8367099231598242312011508394098*10^(-40)][2.387722900107771500561
3、4960912327*10^(-39)*i-7.346839692639296924804603357639*10^(-40),-3.3656917645517268156994122716272*10^(-39)*i-1.8367099231598242312011508394098*10^(-40)][3.6734198463196484624023016788195*10^(-39)*i+1.1020259538958945387206905036459*10^(-39),5.278620108296760294
4、79556374219*10^(-39)*i-3.8570908386356308855224167627605*10^(-39)][-2.3877229001077715005614960912327*10^(-39)*i-7.346839692639296924804603357639*10^(-40),3.3656917645517268156994122716272*10^(-39)*i-1.8367099231598242312011508394098*10^(-40)][-1.836709923159824
5、2312011508394098*10^(-40)*i-1.8367099231598242312011508394098*10^(-40),1.8367099231598242312011508394098*10^(-40)-1.7189575831866919927054801534962*10^(-40)*i][1.1020259538958945387206905036459*10^(-39)-3.6734198463196484624023016788195*10^(-39)*i,-5.27862010829
6、676029479556374219*10^(-39)*i-3.8570908386356308855224167627605*10^(-39)]symsabxy;q=solve('x^2+a*x^2+6*b+3*y^2=0','y=a+(x+3)','x','y')q.xq.yq=x:[2x1sym]y:[2x1sym]ans=(4*a+3^(1/2)*(-15*a-8*b-2*a*b-7*a^2-a^3-9)^(1/2)+a^2+3)/(a+4)-a-3(4*a-3^(1/2)*(-15*a-8*b-2*a*b-7
7、*a^2-a^3-9)^(1/2)+a^2+3)/(a+4)-a-3ans=(4*a+3^(1/2)*(-15*a-8*b-2*a*b-7*a^2-a^3-9)^(1/2)+a^2+3)/(a+4)(4*a-3^(1/2)*(-15*a-8*b-2*a*b-7*a^2-a^3-9)^(1/2)+a^2+3)/(a+4)MuPAD的计算结果更好solve([x^2+a*x^2+6*b+3*y^2=0,y=a+x+3],[x,y])mathematics的计算结果1(弧度/实数)输入solvex2+ax2+6b+3y2=0
8、,y=a+x+3解1x&=2a2--12a3-84a2-24ab-180a-96b-108+8a+62a+8-a-3y&=2a2--12a3-84a2-24ab-180a-96b-108+8a+62a+8,-108-12a3-24ab-84a2-96b-180a≥0anda≠-4解2x&=2a2+-12a3-84a2-24ab-1
