求高手帮忙，编MATLAB程序。！！

在Matlab下输入：edit，然后将下面两行百分号之间的内容，复制进去，保存
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function f=f31(x)
f=1./[(x-2).^2+0.1]+1./[(x-3).^4+0.01];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

返回matlab主界面
输入:
temp=[1,2,3;4,5,6];
f=f31(temp) %验证x是矩阵输入,程序能跑
x=0:0.01:4;
f=f31(x);
plot(x,f)

2题
在Matlab下输入：edit，然后将下面两行百分号之间的内容，复制进去，保存
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function dydx=zh_lankesterljy(x,y)
dydx=x.^2./y-x.*cos(y);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

在Matlab下面输入：
t_end=5;
y0=[1];
[x,y]=ode45('zh_lankesterljy',[0,t_end],y0);
plot(x,y);
xlabel('x');
ylabel('y');