关于matlab线条和标点的绘图问题

Question

Answer 1

你好同学，代码供参考，有帮助还望题主给个采纳支持一下答主答题哟

%1
x=0:pi/10:2*pi;
y1=sin(x);
y2=cos(x);
plot(x,y1,'b-','linewidth',4); hold on;
plot(x,y2,'r--','linewidth',4);
plot([pi/4,pi*5/4], [sin(pi/4),sin(5/4*pi)],'rp','markersize',15,...
    'markerfacecolor','r')
%2
plot([pi/4,pi*5/4], [sin(pi/4),sin(5/4*pi)],'rs','markersize',15,...
    'markerfacecolor','r')
%3
xlabel('x'); ylabel('y')
%4
title('综合练习')

效果