这几个matlab怎么做啊
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这几个matlab怎么做啊
![](http://img.wesiedu.com/upload/e/de/ede9f0c10a615a1914b1837a435bf3c4.jpg)
![](http://img.wesiedu.com/upload/0/9b/09bf520a3eee6a5e52e466a63037cf8b.jpg)
![](http://img.wesiedu.com/upload/1/c0/1c0b35d0717e5399861c83d6e83adf0f.jpg)
![](http://img.wesiedu.com/upload/e/de/ede9f0c10a615a1914b1837a435bf3c4.jpg)
![](http://img.wesiedu.com/upload/0/9b/09bf520a3eee6a5e52e466a63037cf8b.jpg)
![](http://img.wesiedu.com/upload/1/c0/1c0b35d0717e5399861c83d6e83adf0f.jpg)
![这几个matlab怎么做啊](/uploads/image/z/4272994-10-4.jpg?t=%E8%BF%99%E5%87%A0%E4%B8%AAmatlab%E6%80%8E%E4%B9%88%E5%81%9A%E5%95%8A)
![](http://img.wesiedu.com/upload/7/c7/7c77b57f5ac1f828bd5bc84a3c7da5a8.jpg)
![](http://img.wesiedu.com/upload/3/21/32109379effe37b9a49c201459e79740.jpg)
![](http://img.wesiedu.com/upload/c/c1/cc1f4f2d286b3efff2e2256cdc4fa8a6.jpg)
![](http://img.wesiedu.com/upload/7/a7/7a737a0a636a7f7278a936141e8ca538.jpg)
%%%第一问figure(1)x=[8 14 20 5 3];explode=[1 0 0 0 1];labels={'优秀','良好','中等','及格','不及格'};pie(x,explode,labels);%%%第二问figure(2)x=0:pi/100:2*pi;y1=sin(2*x)+3;y2=sin(x).*cos(x);plot(x,y1,'k',x,y2,'-.r')title('y1=sin2x+3和y2=sinxcosx');xlabel('x');ylabel('y');legend('y1=sin2x+4','y2=sinxcosx')grid on %%%第三问a=-4:0.1:4;b=-4:0.1:4;[a b]=meshgrid(a,b);z=(9*(1-a).^2).*exp(-a.^2./2-(b+1).^2);figure(3)mesh(a,b,z);title('三维网格图');figure(4)surf(a,b,z);title('三维曲面图');