... turn the axis on, the grid off H×nh 17.10 >>axis ij % turn the plot upside-down H×nh 17.11 122 >> axis square equal % give axis two command at once H×nh 17.12 >> ... >> plot(x,y),axis([0 2*pi -1 1]),title('sin(x)') >> subplot(2,2,2) % pick the upper right of the 4 subplots >> plot(x,z),axis([0 2*pi -1 1]),title('cos(x)') ... >> plot(x,z),axis([0 2*pi -1 1]),title('cos(x)') >> subplot(2,2,3)% pick the lowwer left of the 4 subplots >> plot(x,a),axis([0 2*pi -1 1]),title('2sin(x)cos(x)')...