`Series`¶

Computes a power series expansion.

$ wo 'Series[Exp[x], {x, 0, 4}]'
SeriesData[x, 0, {1, 1, 1/2, 1/6, 1/24}, 0, 5, 1]

Trailing zero coefficients are dropped while the truncation order is kept:

$ wo 'Series[1 + x, {x, 0, 3}]'
SeriesData[x, 0, {1, 1}, 0, 4, 1]

$ wo 'Series[x^2 + x^4, {x, 0, 7}]'
SeriesData[x, 0, {1, 0, 1}, 2, 8, 1]

An expression free of the expansion variable is returned unchanged:

$ wo 'Series[3, {x, 0, 3}]'
3

$ wo 'Series[a + b, {x, 0, 3}]'
a + b

Series¶