Function reference · Special functions
Chi
Computes the hyperbolic cosine integral.
Chi is the hyperbolic analogue of the cosine integral. Exact endpoint cases are simplified, numeric inputs can be evaluated, and symbolic inputs remain as Chi(x).
The implementation treats Chi as an even function on its supported principal real form; Chi(0) tends to negative infinity.
Examples
These examples use Nerdamer Notation.
Use the singular value at the origin.
Chi(0) // → -Inf
Keep a symbolic argument unevaluated.
Chi(x)Interfaces
The same operation is available through the interfaces below.
Nerdamer Notation
Use this form inside input passed to nerdamer(...).
Chi(arg1)nerdamer.Chi
Call the operation through the default nerdamer import.
nerdamer.Chi(x: Expression): ExpressionParameters
| Name | Type | Description |
|---|---|---|
x | Expression | The input expression. |
Returns
Expression — The hyperbolic cosine integral value.