matlab求(d³y)/dx³+3(dy/dx)+2y=6的通解
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matlab求(d³y)/dx³+3(dy/dx)+2y=6的通解
并求满足y"(0)=1,y´(0)=2,y(0)=3的特解.
并求满足y"(0)=1,y´(0)=2,y(0)=3的特解.
![matlab求(d³y)/dx³+3(dy/dx)+2y=6的通解](/uploads/image/z/14920018-34-8.jpg?t=matlab%E6%B1%82%EF%BC%88d%26sup3%3By%EF%BC%89%2Fdx%26sup3%3B%2B3%EF%BC%88dy%2Fdx%EF%BC%89%2B2y%3D6%E7%9A%84%E9%80%9A%E8%A7%A3)
dsolve('D3y+3Dy+2y=6','x')
ans =
1/6*x^3+1/2*C1*x^2+C2*x+C3
>> dsolve('D3y+3Dy+2y=6','D2y(0)=1,Dy(0)=2,y(0)=3','x')
ans =
1/6*x^3+1/2*x^2+2*x+3
ans =
1/6*x^3+1/2*C1*x^2+C2*x+C3
>> dsolve('D3y+3Dy+2y=6','D2y(0)=1,Dy(0)=2,y(0)=3','x')
ans =
1/6*x^3+1/2*x^2+2*x+3
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