exm050102.m

matlab电子书籍

t1=(0:11)/11*pi;							
t2=(0:400)/400*pi;
t3=(0:50)/50*pi;						
y1=sin(t1).*sin(9*t1);				
y2=sin(t2).*sin(9*t2);
y3=sin(t3).*sin(9*t3);
subplot(2,2,1),plot(t1,y1,'r.')								
axis([0,pi,-1,1]),title('(1)点过少的离散图形')
subplot(2,2,2),plot(t1,y1,t1,y1,'r.')			
axis([0,pi,-1,1]),title('(2)点过少的连续图形')
subplot(2,2,3),plot(t2,y2,'r.')								
axis([0,pi,-1,1]),title('(3)点密集的离散图形')
subplot(2,2,4),plot(t3,y3)										
axis([0,pi,-1,1]),title('(4)点足够的连续图形')