<jupyter_start><jupyter_text>Sympy Basics: 1. Unit vectors are indicated by a . (For example, R.x is the unit vector in the x direction). 2. Scalars are indicated by [] (For example, R[0] is x)  First let's import packages<jupyter_code>## Check versions
### Need at least Sympy Version 1.2 (from conda-forge)
print('Ipyvolume version = {}'.format(ipv.__version__))
print('Sympy version = {}'.format(sympy.__version__))
## Now let's checking that plotting and the plotting widget work
# init_printing()
plt.figure()
plt.plot([1,2,3])
plt.show()<jupyter_output><empty_output>
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