Question

matlab求联立方程数值解

(x/9.5)^(1/(y^2 - 1) - 1)/(9.5*(y^2 - 1))-0.24191/(9.5*0.24191+2.2561)=0
(x/9.5)^(1/(y^2 - 1))-(x*(x/9.5)^(1/(y^2 - 1) - 1))/(9.5*(y^2 - 1))-2.2561/(9.5*0.24191+2.2561)=0
两个方程联立求x和y要怎么编程求丫？

Answer 1

该联立方程组的数值解，可以用fsolve（禅中）函数来求解。求解过程如下：

func=@(x)[(x(1)/9.5)^(1/(x(2)^2 - 1) - 1)/(9.5*(x(2)^2 - 1))-0.24191/(9.5*0.24191+2.2561) (x(1)/9.5)^(1/(x(2)^2 - 1))-(x(1)*(x(1)/9.5)^(1/(x(2)^2 - 1) - 1))/(9.5*(x(2)^2 - 1))-2.2561/(9.5*0.24191+2.2561)]

x0=[9.5,2];

[x,h]=fsolve(@(x)func(x),x0)

运枯袭清行没前结果

x=9.51792995871074；y=1.7262248521773