matlab求含有多个参数的复杂函数的定积分

学习时间:2026-04-09 07:37:15 阅读：9475

matlab求含有多个参数的复杂函数的定积分求函数函数y=1/t(x)对x的定积分,积分区间为（0,m）；其中：t(x)=t+2(r-sqrt(r^2-(m/2-x)^2));我用的语句是：syms t r m x;y=1/(t+2(r-sqrt(r^2-(m/2-x)^2)));int_y=int(y,x,0,m)为什么求不出结果?而matlab提示：Warning:Explicit integral could not be found.那有什么方法可以求呢？

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懦弱的机器猫

2026-04-09 07:37:15

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Warning:Warning,unable to determine if r+1/2*m is between 0 and m; try to use assumptions orset _EnvAllSolutions to trueWarning:Warning,unable to determine if -r+1/2*m is between 0 and m; try to use assumptions orset _EnvAllSolutions to trueWarning:Warning,unable to determine if 1/2*m-1/2*(-t*(t+4*r))^(1/2) is between 0 and m; try touse assumptions or set _EnvAllSolutions to trueWarning:Warning,unable to determine if 1/2*m+1/2*(-t*(t+4*r))^(1/2) is between 0 and m; try touse assumptions or set _EnvAllSolutions to trueWarning:Explicit integral could not be found。> In sym。int at 58In Untitled at 6 int_y =int(1/(t+2*r-(4*r^2-m^2+4*m*x-4*x^2)^(1/2)),x = 0 。。m)你的这个表达式太复杂了。MATLAB用现有的方法求不出来

matlab求含有多个参数的复杂函数的定积分

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