Google colab snippets

colab-snippets.py

from sympy import *
# import numpy as np                # Doesn't mix super-well w/sympy
from sympy.plotting import plot     # According to https://stackoverflow.com/questions/71519021/what-is-the-difference-between-matplotlib-and-sympy-plotting-module,
                                    # sympy.plotting is an abstraction layer over matplotlib, and is preferred for symbolic stuff.
# import matplotlib.pyplot as plt
init_printing()
from sympy.vector import CoordSys3D, Vector, matrix_to_vector as m2v
N = CoordSys3D('N')
t = symbols('t')

def vec3(sym):
    v = symbols(f'{sym}:3')
    g = globals()
    for i in range(3):
        g[f'{sym}{i}'] = v[i]
    g[f'{sym}'] = v[0]*N.i + v[1]*N.j + v[2]*N.k