Piecewise function plot help

I am trying to graph this Piecewise function matlab. I am facing an issue with the graph . Its wrong. I am just rying to show that the median is equal to 2.16 approximately

Here is my script and i hope someone edit on it and not create his own solution.

x1 = [0:0.1:1];

f1 = 0;

x2 = [1:0.1:3];

f2 = [1/12*t1.^2 + 1/6*t1 - 1/4];

x3 = [3:0.1:0];

f3 = 1;

figure

plot(x1,f1,x2,f2,x3,f3)

Answer 1

[Setsuna Yuuki.]

The length must be the same

x1 = [0:0.1:1];
f1 = zeros(1,numel(x1)); %f1 with the same length as x1
x2 = [1:0.1:3];
f2 = [1/12*x2.^2 + 1/6*x2 - 1/4]; %change t1  --> x2
x3 = [3:0.1:4];
f3 = ones(1,numel(x3)); %f3 with the same length as x3
figure
plot(x1,f1,x2,f2,x3,f3,'LineWidth',3)