Q1)
x = [0 1 2 2 3];
y = [1 3 3 4 5];
t = [0 1 2 3 4];
Rx = 0:0.001:4;
Rt = spline(t,x, Rx);
St = spline(t,y, Rx);
figure
%plot(Rx, Rt);
%plot(Rx, St);
plot(Rt, St);
xlabel('x'), ylabel('t')
grid on

Q1b)
x = [2.75 1.3 -0.25 0.0 0.25 -1.3 -2.5 -1.3 0.25 0.0 -0.25 1.3 2.75];
y = [-1.0 -0.75 0.8 2.0 0.8 -0.25 0.0 0.25 -1.3 -2.5 -1.3 -0.25 -1.0];
t = 0:12
Rx = 0:0.001:12;
Rt = spline(t,x, Rx);
St = spline(t,y, Rx);
figure
%plot(Rx, Rt);
%plot(Rx, St);
plot(Rt, St);
xlabel('x'), ylabel('t'