how can i make the program to chose a random value of (w) ,, if (m) is matrix input

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Mohammad Adeeb
Mohammad Adeeb 2018-3-10
评论： Mohammad Adeeb 2018-3-10
u=(t.*sin(3.*t)).^m;
w=diff(u,t,2);
dy1=diff(y,t,1);
dy2=diff(y,t,2);
y(t)=dsolve(dy2-(5*dy1)+(4*y)==randi(w),dy2(0)==0,dy1(0)==0,dy2==0,dy1(0)==0);

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Image Analyst
Image Analyst 2018-3-10
Try randi():
randomIndex = randi(length(w), 1);
randomW = w(randomIndex);
or something like that.
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