vpa - Variable precision arithmetic
Syntax
R = vpa(A)
R = vpa(A, d)
Description
R = vpa(A) uses variable-precision arithmetic
(VPA) to compute each element of A to d decimal
digits of accuracy, where d is the current setting
of digits. Each element of the result is a symbolic
expression.
R = vpa(A, d) uses d digits,
instead of the current setting of digits.
Examples
The statements
digits(25)
q = vpa(sin(sym('pi')/6))
p = vpa(pi)
w = vpa('(1+sqrt(5))/2')return
q =
0.5
p =
3.141592653589793238462643
w =
1.618033988749894848204587
vpa pi 75 computes π to 75 digits.
The statements
A = vpa(hilb(2),25)
B = vpa(hilb(2),5)
return
A =
[ 1.0, 0.5]
[ 0.5, 0.3333333333333333333333333]
B =
[ 1.0, 0.5]
[ 0.5, 0.33333]
See Also
digits, double
 | unique | | zeta (sym) |  |
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