e0605.m

来自「《MATLAB 7.X程序设计》-王建卫-源代码及习题答案」· M 代码 · 共 6 行

x=-pi:pi/10:pi;xx=x+(x==0&x==pi&x==-pi)*eps;%补充真数为零的点
yy=log(abs(sin(xx)));plot(x,yy)
title('This is figure of the five example. '); %给图形加上标题
axis([-3.2 3.2 -45 0])
xlabel('x'),ylabel('yy');grid on