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Triple Integral Help - Printable Version

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Triple Integral Help - marcusnicolas1 - 12-18-2014 06:50 PM

I posted this subject somewhere but can no longer find it. I am trying to do a triple integral and I keep coming up with an error message. ... in CAS. When I do it in non CAS mode, it comes up with the exact numerical value with decimal points. I am trying to have it come up with the exact number which is supposed to be 96pi. Can anyone help me with how to put in a triple integral with its limits. Thank you


RE: Triple Integral Help - Snorre - 12-18-2014 09:16 PM

Hi Marcus,

your original posting is not very far away: here.
Please post your integral to avoid answers like:
[attachment=1313]
;-)


RE: Triple Integral Help - marcusnicolas1 - 12-18-2014 09:43 PM

How do I post the integral


RE: Triple Integral Help - marcusnicolas1 - 12-18-2014 10:13 PM

I use the actual symbol but here is basically what I do ..... int(int(int(r,z,0,r^2 -4)1,r,2,3)1,x,0,2pi) .... this is supposed to produce (25pi)/2. It does not work. I get error messages. I am thinking it is the way I put it together but I can not figure it out. I had another problem to use but I can not remember what it is.


RE: Triple Integral Help - DrD - 12-18-2014 10:55 PM

Have you tried using the integral template on the [c] key? Start from the outer integrand and work inwards.