For the function f$($t$)=|$t$|$ where $<$ t $<.$ Answer the following questions:

a$)$ Determine whether the function is odd or even.

b$)$ Write a matlab code to plot the function f$($t$).$

c$)$ Find the fourier series of the function f$($t$).$

d$)$ Write a matlab code to plot the fourier series of the function f$($t$).$