u''-ux=sinx,u(0)=u(1)=0,求MATLAB求解的程序
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clear all
clc>> a=dsolve('D2y=sinx+yx','y(0)=0')
a =1/2*(sinx+yx)*t^2+C1*t
>> b=dsolve('D2y=sinx+yx','y(1)=0')
b =1/2*(sinx+yx)*t^2+C1*t-1/2*sinx-1/2*yx-C1
>> a-bans =1/2*sinx+1/2*yx+C1
>> solve('1/2*sin(x)+1/2*y*x+C1=0','y')
ans =-(sin(x)+2*C1)/x %你要的答案应该是这个吧