Symbolic exponential integral (Ei) function.
Definition and example:
syms x f = ei(x) ⇒ f = (sym) Ei(x) rewrite(f, 'Integral') % doctest: +SKIP ⇒ (sym) x ⌠ ⎮ t ⎮ ℯ ⎮ ── dt ⎮ t ⌡ -∞
(Note rewriting as an integral is not yet supported.)
Other examples:
diff(f) ⇒ (sym) x ℯ ── x
See also: @sym/expint.
Package: symbolic