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1-Visitor
December 20, 2012
Question

Numerical integration

  • December 20, 2012
  • 1 reply
  • 1188 views

Hi,

I was evaluating a triple integral wherein the integrand is a huge expression of sin & cos in terms of x,y,z. This is taking a lot of time in evaluation, is there a way to calculate the integral numerically instead of exact way? so that it takes very less time .

1 reply

23-Emerald V
December 20, 2012

Prithivirajan Veerappan wrote:

Hi,

I was evaluating a triple integral wherein the integrand is a huge expression of sin & cos in terms of x,y,z. This is taking a lot of time in evaluation, is there a way to calculate the integral numerically instead of exact way? so that it takes very less time .

On the assumption that you are using the symbolic evaluation (right arrow), then simply type '=' instead to carry out a numerical evaluation; a numerical integration may still be slow, but you may also find that one of the context menu options speeds things up (or gives a more accurate answer). If you aren't using the symbolic evaluation then you could try to simplify it symbolically before evaluating it. Can you post a worksheet containing your integral?

collab+-+12+12+20+integration+01.jpg

Stuart