Approximate a product with the default tolerances:
Find the error versus the exact value:
The error with smaller absolute and relative tolerances:
The error with larger absolute and relative tolerances:
Get the number of evaluation points used in a product approximation:
The evaluation points used in a product approximated by an integration method:
The evaluation points used in a product approximated by a sequence extrapolation method:
Use the Wynn epsilon method to approximate an infinite product:
Compare to the exact value:
The error is smaller with the default method:
By default
NProduct uses 15 factors at the beginning before approximating the tail:
The error for this example is large because the factors peak at 20:
Increasing
to include this feature improves the approximation:
By default the factor's convergence is verified:
Generally, if the convergence is not verified the computation is faster:
Use higher precision to get a better approximation:
Find the error versus the exact value:
can be used to evaluate multidimensional products. 
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EXAMPLES
Basic Examples 
Scope 