MATLAB实验报告三

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1、1.a1.m:functiony=a1(n)k=sqrt(n);flag=1;fori=2:k;ifmod(n,i)==0flag=0;breakendendf=flag;iff==1disp('该数是素数')elsedisp('该数不是素数')enda11.m:n=input('Pleaseinputn:')a1(n)3.c1.m:functiony=c1(x)y=0;n=fix(log10(x))+1;fori=1:ny=y+~mod(x,10);x=fix(x/10);endc11.m:s=0;fori=1:2006s=s+c1(i);ends5.d1.m:f

2、unctiony=d1(step,linestyle)y=0;x1=-3:step:-1-step;x2=-1:step:1-step;x3=1:step:3;y1=(-x1.^2-4*x1-3)/2;y2=-x2.^2+1;y3=(-x3.^2+4*x3-3)/2;x=[x1,x2,x3];yy=[y1,y2,y3];plot(x,yy,linestyle)d11.m:y=d1(0.01,'r-')6.e1.m:functiony=e1(x)ch=menu('Ñ¡Ôñ¾ØÕó','[-10,10]¾ùÔÈ·Ö²¼','[-5,5]¾ùÔÈ·Ö²¼','[-1,1]

3、¾ùÔÈ·Ö²¼','(0,1)Õý̬·Ö²¼');switchchcase1,y=10-20*rand(x);case2,y=-5-10*rand(x);case3,y=-1-2*rand(x);case4,y=randn(x);ende11.m:x=input('Pleaseinputx:')e1(x)7.a=input('ÇëÒÀ´ÎÊäÈëÓïÑÔ£¬Êýѧ£¬Ó¢ÓÎïÀí£¬»¯Ñ§£¬ÉúÎï³É¼¨£»Èç:[687265683579]:');w=[23242.51];sum=0;w1=0;fore=1:6w1=w1+w(e);endfor

4、j=1:6sum=sum+a(j).*w(j);endy=sum./w1;disp(y)8.functiony=fun408()I=input('请输入利润I:');if(I<=10)n=0;elseif(10

5、y=K;9.functiony=fun()n=input('请输入项数n:');value=0;a(1)=2;b(1)=1;a(2)=3;b(2)=2;sum(1)=a(1)./b(1);sum(2)=a(2)./b(2);fori=3:na(i)=a(i-2)+a(i-1);b(i)=b(i-2)+b(i-1);sum(i)=a(i)./b(i);endforj=1:nvalue=value+sum(j);endy=value;10.functiony=shaixuan(a,b)a=input('a=');b=input('b=');n=a;x=[1:n];i=0

6、;m=0;j=1;while(n>0)i=i+1;m=m+1;if(m==b)k(j)=x(i);j=j+1;n=n-1;for(v=i:n)x(v)=x(v+1);endm=0;i=i-1;endif(i==n)i=0;endendy=k