6.38.8 Converting a number into an interval: convert
The convert command (see Section 6.23.26)
can convert an expression which evaluates
to a number to the smallest interval which contains the number.
-
convert takes two mandatory arguments and one
optional argument:
-
expr, a number which evaluates to a number.
- interval, a reserved word.
- Optionally, n, an integer greater than 15 giving the
desired number of digits.
- convert(expr,interval
⟨,n⟩)
returns the smallest interval containing the value of expr.
Examples.
-
Input:
convert(sin(3)+1, interval)
Output:
[1.14112000805985..1.14112000805990]
|
- Input:
convert(sin(3)+1, interval,20)
Output:
[1.1411200080598672220..1.1411200080598672222]
|