MATLAB 程序设计与应用 课后实验题解 很全的

实验四 1：循环 n=input('a='); k=0; for m=1:n k=1/m^2+k; end y=(k*6)^(1/2) 向量： n=input('n='); m=1:n; y=(6*sum(1./m.^2))^(1/2) 2：y=0; k=0; while 1 k=k+1; y=y+1/(2*k-1); if y>=3 break end end format long y=y-1/(2*k-1) k=k-1 3：a=input('a='); b=input('b='); n=1; x0=1; x1=a/(x0+b); while abs(x0-x1)>=10^(-5)|n<=500 k=a/(x1+b); x0=x1; x1=k; n=n+1; end x1 4：f(1)=1; f(2)=0; f(3)=1; for n=4:100 f(n)=f(n-1)-2*f(n-2)+f(n-3); end zuidazhi=max(f) zuixiaozhi=min(f) sn=sum(f) a=find(f>0); b=find(f<0); c=find(f==0); zhengshu=length(a) fushu=length(b) ling=length(c) 5: x=2:49; y=x.*(x+1)-1; for i=2:50 n=find(rem(y,i)==0&y~=i); y(n)=[]; x(n)=[]; end i=length(y) s=sum(y)