i need $3$ series fourier exponential, trigonometry $,$ Polar with this periodic signal x$($t$)$ i want SOLUTION handwritting procediment step by step with this graphic wxmaxima is this code in python import numpy as np

import matplotlib.pyplot as plt

# Definir una funci$$n escalonada que representa la se$$al

def step$\_$function$($t$,$ height, start, end$)$:

return np$.$where$(($t $>=$ start$)$ & $($t $$ end$),$ height, $0)$

# Definir bloques de escalones y espacios

def escalones$($t$)$:

return $($

step$\_$function$($t$,2,4,5)+$ step$\_$function$($t$,1,3,4)+$ step$\_$function$($t$,0,2,3)+$

step$\_$function$($t$,2,1,2)+$ step$\_$function$($t$,1,0,1)+$ step$\_$function$($t$,0,-1,0)+$

step$\_$function$($t$,2,-2,-1)+$ step$\_$function$($t$,1,-3,-2)+$ step$\_$function$($t$,0,-4,-3)+$

step$\_$function$($t$,2,-5,-4)+$ step$\_$function$($t$,1,-6,-5)+$ step$\_$function$($t$,0,-7,-6)$

$)$

# Crear un rango de t

t $=$ np$.$arange$(-7,7,0\mathrm{.}01)$

# Graficar la se$$al para un rango de t

plt$.$plot$($t$,$ escalones$($t$),$ color$=$'blue', linewidth$=5)$

plt$.$xlabel$(\text{'}$t$\text{'})$

plt$.$ylabel$(\text{'}$Amplitud$\text{'})$

plt$.$title$(\text{'}$Gr$$fico de la funci$$n escalonada'$)$

plt$.$xlim$(-7,7)$

plt$.$ylim$(-0\mathrm{.}5,2\mathrm{.}5)$

plt$.$grid$($True$)$

plt$.$show$()$