function z=myfun1(x,y)if y==1z=sin(x);elseif y==2z=cos(x);elsez=sin(x)*cos(x);endfunction z=myfun2(x)if x<=az=0;elseif x<=bz=(x-a)/(b-a);elseif x<=cz=1;elseif x<=dz=(x-d)/(c-d);elsez=0;end
