CASCALC89 COMMAND · NOT ON THE TI-89
li(
Returns the logarithmic integral of a value.
Syntax
li(expr)
- Group
- Special functions
- Arguments
- Takes one value or expression.
- Availability
- Included
- Origin
- TI-Nspire CAS style command; the TI-89 Titanium handheld does not have it
Example
| Input | Result |
|---|---|
| li(2.) | 1.04516378012 |
Typing li(2.) on the home screen and pressing ENTER returns 1.04516378012.
Related commands
- polylog(Returns the polylogarithm of order n of a value.
- Shi(Returns the hyperbolic sine integral of a value.
- Si(Returns the sine integral of a value.
- Chi(Returns the hyperbolic cosine integral of a value.
- Ci(Returns the cosine integral of a value.
- dilog(Returns the dilogarithm of a value; dilog(1) is π^2/6.
- Ei(Returns the exponential integral of a value.
- erf(Returns the error function of a value, which is closely related to the normal distribution.