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Evaluate an expression for given points
01-12-2020, 09:28 AM
Post: #1
Evaluate an expression for given points
Hi there

I would like to evaluate the following expression for even and odd n‘s

One solution could be to type in n=1 then, n=2 and so on but this is time consuming. Is there a way to directly define the numbers where to evaluate the expression?

I have tried with n=[0 1] then the calculator crashed...


Thank you.
Regards
Blevita


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01-12-2020, 10:22 AM (This post was last modified: 01-12-2020 10:23 AM by Tyann.)
Post: #2
RE: Evaluate an expression for given points
(01-12-2020 09:28 AM)blevita Wrote:  Hi there

I would like to evaluate the following expression for even and odd n‘s

One solution could be to type in n=1 then, n=2 and so on but this is time consuming. Is there a way to directly define the numbers where to evaluate the expression?

I have tried with n=[0 1] then the calculator crashed...


Thank you.
Regards
Blevita

Bonjour
Utilisez une liste {1,2,...} à la place de n.

Hello
Use a list {1,2,...} instead of n.

Sorry for my english
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01-12-2020, 11:44 AM
Post: #3
RE: Evaluate an expression for given points
Merci

Ca cest tres bien.


Worked perfectly
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01-12-2020, 08:25 PM
Post: #4
RE: Evaluate an expression for given points
(01-12-2020 09:28 AM)blevita Wrote:  I would like to evaluate [an] expression for even and odd n‘s...

Is it practical to calculate f(x)=2/(n*pi) and multiply f(x) by (n MOD 2)?
This should return f(x) for odd n and 0 for even n.

it's possible to do the same thing if you don't have the MOD function by cleverly using (-1)^n.

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01-13-2020, 02:28 AM
Post: #5
RE: Evaluate an expression for given points
(01-12-2020 08:25 PM)Allen Wrote:  
(01-12-2020 09:28 AM)blevita Wrote:  I would like to evaluate [an] expression for even and odd n‘s...

Is it practical to calculate f(x)=2/(n*pi) and multiply f(x) by (n MOD 2)?
This should return f(x) for odd n and 0 for even n.

it's possible to do the same thing if you don't have the MOD function by cleverly using (-1)^n.
irem
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