MATLAB怎么把要y1=sin(x);y2=cos(x);y3=tan(x);y4=cot(x);画在同一个图中?MATLAB里怎么把要y1=sin(x);y2=cos(x);y3=tan(x);y4=cot(x);画在同一个图中?

Question

MATLAB 怎么把要 y1=sin(x); y2=cos(x);y3=tan(x); y4=cot(x); 画在同一个图中?
MATLAB 里 怎么把要 y1=sin(x); y2=cos(x);y3=tan(x); y4=cot(x); 画在同一个图中?

Answer 1

要用到semilogy这个函数 x=-10:0.1:10;
y1=sin(x);
y2=cos(x);
y3=tan(x);
y4=cot(x);
semilogy(x,y1,'b*-');hold on;
semilogy(x,y2,'rd-');hold on;
semilogy(x,y3,'-');hold on;
semilogy(x,y4,'*');