matlab小程序编程

N=length(A)

B=zeros(N,2)

for n=1:N

subA=A(max(1,n-5):min(N,n+5))

B(n,:)=[mean(subA),var(subA)]

end

B

m=3

n=4

aaa=random('uniform',-1,1,m,n)

[nmax,~]=max(aaa(:))

[nmin,~]=min(aaa(:))

[irowmax,icolmax]=find(aaa>=max(aaa(:)))

[irowmin,icolmin]=find(aaa<=min(aaa(:)))

nmax

irowmax

icolmax

nmin

irowmin

icolmin

第二题不完整

第三题

f1=@(x)x.*cos(x)

f2=@(x)x.*cos(1./x)

x=linspace(0,2*pi)

y=f1(x)

figure(1)

plot(x,y,'-ko','linewidth',2)

xlabel('x')

ylabel('x*cos(x)')

figure(2)

plot(x,y,'-rs','linewidth',1)

xlabel('哗物蚂x')

ylabel('x*cos(x)')

x=linspace(0,2*pi)

y=f2(x)

figure(3)

plot(x,y,'-ko','linewidth',2)

xlabel('x')

ylabel('x*cos(x)'乱埋)

figure(4)

plot(x,y,'-rs'蚂模,'linewidth',1)

xlabel('x')

ylabel('x*cos(x)')