Question

请教 在Matlab 中 使用solve函数求解二元二次方程组

clc
clear all
syms x y
equation1=1351504793280023/309485009821345068724781056 - (y*conj(y))/4 - (252750694268921*3^(1/2)*x*y)/562949953421312 - (3*x*conj(x))/4 ;
equation2=8059982666094291/9903520314283042199192993792 - (3*y*conj(y))/4 - (252750694268921*3^(1/2)*x*y)/562949953421312 - (x*conj(x))/4 ;

[x,y]=solve(equation1,equation2,'x,y')
总是提示错误：
??? Error using ==> mupadengine.mupadengine>mupadengine.feval at 162
Error: cannot differentiate equation [numeric::fsolve]

Error in ==> solve>mupadSolve at 232
list = feval(symengine,'mlfsolve',eqns,vars);

Error in ==> solve at 93
[R,symvars,order] = mupadSolve(eqns,vars);

Error in ==> fslove at 46
[x,y]=solve(equation1,equation2,'x,y')

诚请Matlab 高手解答！真心求教！

Answer 1

anyhow, I got an anwser, as below.

x =

(.27313763081764851197485172598348e-22-.30348625646405390219095387315146e-23*i)*((-46505726310086708110861.031443676-5167302923342967567816.8208871408*i)*conj(-.23479391587158800462451624083883e-5-.26088212874620889402438133212685e-6*i)+19068205386677863)

y =

-.23479391587158800462451624083883e-5-.26088212874620889402438133212685e-6*i

?

Answer 2

这句
[x,y]=solve(equation1,equation2,'x,y')
好像要改为
[x,y]=solve('equation1','equation2','x,y')