Some simple sympy examples.
sympy.ipynb: Jupyter notebook with some simple sympy examples.triple_six_puzzle.ipynb: Jupyter notebook that illustrates how to use computer algebra to solve a numerical puzzle.factorial_digits.ipynb: Jupyter notebook using sympy to compute the number of digits of the factorial of a number.pendulums.ipynb: Notebook on using the Euler-Lagrange equations to derive the equation for the motion of pendulumns.plotting: illustration of using alternative backends for plots in sympy.img: images for notebooks.