Further information

How can we plot a function

It is possible to plot a function using sympy using the sympy.plot function:

Tip

sympy.plot(expression)

So for example, here is a plot of \(f(x)=x^2 + 3x + 1\):

import sympy as sym

x = sym.Symbol("x")
sym.plot(x ** 2 + 3 * x + 1)

<sympy.plotting.plot.Plot at 0x7fed64824c40>

It is possible to specify the x limits and combine it with other plots:

sym.plot(x ** 2 + 3 * x + 1, xlim=(-5, 5))

<sympy.plotting.plot.Plot at 0x7fed3ea8d270>

This plotting solution is fine it you want to take a look at a function quickly but it is not recommended. The main library for plotting is called matplotlib and Matplotlib covers this.

• Here is the sympy documentation for plotting: https://docs.sympy.org/latest/modules/plotting.html

• Here is the official matplotlib documentation: https://matplotlib.org