Section5Symbolic Manipulation and Plotting Discretely
You need to declare symbolic variables (except x comes pre-defined). That done, summations simplify as expected.
We'll recognize this result if we factor.
Arbitrarily complicated polynomials as summands can be simplified.
We can convert this symbolic expression to a callable function.
And call it—thus making \(n\) concrete.
Straightforward to plot a discrete function, we will plot using an expression.
Again, but with options.