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Math-Matchstick Man
on 15 Nov 2023
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drawframe(1);
Write your drawframe function below
function drawframe(n)
persistent txtHdl armHdl
if n==1
ax=gca;
ax.DataAspectRatio=[1,1,1];
ax.XLim=[-5,5];
ax.YLim=[-5,5];
ax.XColor='none';
ax.YColor='none';
hold on
txtHdl = text(0,3.5,'y = x','FontSize',20,'FontName','Times New Roman','FontWeight','bold',...
'HorizontalAlignment','center','Color',[0,.25,.45]);
armHdl = plot([-pi,pi],[-pi,pi],'Color',[.8,0,0],'LineWidth',3);
t=linspace(0,2*pi,200);
fill(cos(t),sin(t)+1,[1,1,1],'EdgeColor',[.4,.4,1],'LineWidth',3)
plot(cos(t(101:200)).*.5,sin(t(101:200)).*.5+1,'Color',[.4,.4,1],'LineWidth',3)
fill(cos(t).*.8,sin(t).*1.4-1.4,[1,1,1],'EdgeColor',[.4,.4,1],'LineWidth',3)
plot([-0.38,-0.97,-1.81],[-2.64,-4.50,-4.76],'Color',[.4,.4,1],'LineWidth',3)
plot([ 0.38, 0.97, 1.81],[-2.64,-4.50,-4.76],'Color',[.4,.4,1],'LineWidth',3)
plot([-0.15,-0.42],[ 1.98, 2.15],'Color',[.4,.4,1],'LineWidth',3)
scatter([-0.2,0.2],[1.2,1.2],25,[.4,.4,1],'filled','o')
end
switch true
case n>=7 && n<=12
armHdl.XData = [-pi,0, pi];
armHdl.YData = [ pi,0, pi];
txtHdl.String = 'y = |x|';
case n>=13 && n<=18
armHdl.XData = [-pi,0, pi];
armHdl.YData = [-pi,0,-pi];
txtHdl.String = 'y = - |x|';
case n>=19 && n<=24
armHdl.XData = -2:.02:2;
armHdl.YData = (-2:.02:2).^2;
txtHdl.String = 'y = x^2';
case n>=25 && n<=30
armHdl.XData = -2:.02:2;
armHdl.YData = (-2:.02:2).^3;
txtHdl.String = 'y = x^3';
case n>=31 && n<=36
armHdl.XData = -pi:.01:pi;
armHdl.YData = sin(-pi:.01:pi);
txtHdl.String = 'y = sin(x)';
case n>=37 && n<=42
armHdl.XData = -2.5:.02:2.5;
armHdl.YData = 2.^(-2.5:.02:2.5)-1;
txtHdl.String = 'y = 2^x - 1';
case n>=43 && n<=48
t=linspace(0,2*pi,200);
armHdl.XData = cos(t).*2;
armHdl.YData = sin(t).*2+2;
txtHdl.String = 'x^2 + (y-2)^2 = 4';
end
end
