The Summing template on the C Key how does it work?

05112019, 11:54 AM
Post: #1




The Summing template on the C Key how does it work?
Product: HP Prime G2
I tried using The Sum that E for lists with i=0 and infinity sign above and the expression after the = sign. I put the template on my Home page and added all the parts it did not work. Does anyone know how to use it I have tried it in CAS and without CAS still, this function does not operate for me. Help needed. https://h30434.www3.hp.com/t5/Calculator...p/7116522 [/quote] 

05112019, 01:12 PM
Post: #2




RE: The Summing template on the C Key how does it work?
The lowercase (script) i is the constant \( \sqrt{1} \); use n for your index variable.
Graph 3D  QPI  SolveSys 

05112019, 01:21 PM
Post: #3




RE: The Summing template on the C Key how does it work?
1. (Lower case) i is a reserved variable,
2. The angle mode should be set to radians, 3. Use == for the comparison. 

05112019, 02:57 PM
(This post was last modified: 05112019 03:06 PM by tom234.)
Post: #4




RE: The Summing template on the C Key how does it work?
Thank you I have done the following, however, the answer is 1.9 It should be
1.5 for pi/2 and the answer should be 1. I can't do this in a function app. I had to do it in just the regular window under CAS. Is that where I should be entering it. 

05122019, 08:47 AM
Post: #5




RE: The Summing template on the C Key how does it work?
It works fine in CAS.
Josep Mollera. HP PRIME, HW: C, SW: 2.1.14181 (2018 10 16). 

05122019, 10:50 AM
Post: #6




RE: The Summing template on the C Key how does it work?
(05112019 02:57 PM)tom234 Wrote: Thank you I have done the following, however, the answer is 1.9 It should be The problem with what is shown in your thumbnail is that the \((2n+1)!\) in the denominator is outside the summation, which is why it still appears in the final answer. Nigel (UK) 

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