please read all information i dont want CODES $,$any code when you try to solve my question Use only math calculus Formule of Fourier $.$ i need $3$ FORUIER SERIES TRIGONOMETRIC,POLAR AND EXPONENTIAL THAT PYTHON CODE ONLY USE LIKE REFERENCE PRINT tTHE GRAPHIC to see WHAT KIND OF periodic signal x $($t$)$ i want the SOLUTION $(3$ SERIES FOURIER $)$ handwritting I DONT WANT ANY CODE SOLUTION ONLY HANDWRITTING or Maths proceeds im refers ONLY WRITING SOLUTIONS in paper please procediment step by step with this graphic python Use this code like reference 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$()$