8-13  ʹsurfάͼΡ

>> % óڻάͼ
>> x=[2 4 6 8 10 12 14 16 18 20];
>> y=[1 2 3 4 5 6 7 8 9 10];
>> z=x'*y
>> surf(x,y,z)
>>


>> % óڻάͼ
>> x=[20 18 16 14 12 10 8 6 4 2];
>> z=y'*x
>> surf(z)
>>

>> % óڻάͼ
>> [X,Y]=meshgrid([-4:0.2:4]);
>> Z=exp(-0.5*(X.^2Y.^2));
>> surf(X,Y,Z)
>>

