MATLAB揭秘---------第三章习题

第三章习题

>> x = [0:0.1:1];
>> y  = tan(x);
>> plot(x,y),xlabel('x'),ylabel('y')


>> x = [0:0.1:1];
>> y1 = tan(x);
>> y2  = sin(x);
>> plot(x,y1);
>> hold on
>> plot(x,y2);


3.

>> x = [-pi:0.2:pi];
>> x = linspace(-pi,pi);
>> x = linspace(-pi,pi,50);

>> [x,y] = meshgrid(-3:0.1:2,-5:0.1:5);
>> [x,y] = meshgrid(-5:0.2:5,-5:0.2:5);

>> t = [0:0.1:10*pi];
>> x = exp(-t).*cos(t);
>> y = exp(-t).*sin(t);
>> z =t;
>> plot3(x,y,z)
>> grid on