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10-11-2015
09:30 AM

10-11-2015
09:30 AM

Use an appropriate function using Mathcad to find the **remainder** when

12345678981129 is divided by 5518.

Can anybody help in this?

Beginner in Mathcad...

Solved! Go to Solution.

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10-11-2015
06:24 PM

7 REPLIES 7

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10-11-2015
09:41 AM

10-11-2015
09:41 AM

Re: Congruences, Divisibility Test

Look up the "floor" function.

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10-11-2015
11:56 AM

10-11-2015
11:56 AM

Re: Congruences, Divisibility Test

Or the "mod" function.

Alan

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10-11-2015
06:24 PM

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10-11-2015
07:02 PM

10-11-2015
07:02 PM

Re: Congruences, Divisibility Test

And here endeth the beginners lesson in Mathcad

Interesting observation about the built-in mod function though

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10-13-2015
10:54 AM

10-13-2015
10:54 AM

Re: Congruences, Divisibility Test

Thxs, Sir...

As for trunc and floor, I don't really understand. It don't seems to give the right answer to the question by using trunc and floor.

I will practice on it and figure it out...

Regards

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10-13-2015
11:42 AM

10-13-2015
11:42 AM

Re: Congruences, Divisibility Test

Sir,

It seems like = sign is not showing the right answer for some other questions.... Symbolic processing is more appropriate.

Thxs again.

Regards

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10-13-2015
11:48 AM

10-13-2015
11:48 AM

Re: Congruences, Divisibility Test

Kok Kiang Lian wrote:

Sir,

It seems like = sign is not showing the right answer for some other questions.... Symbolic processing is more appropriate.

Yes. For large integers (more 15 digits), the numeric processor will have limitations on how many digits it can store and, consequently, on how accurate the divisions will be, even with smaller integers as the divisions may not have sufficient (binary) digits to be exact. The symbolic processor should be able to handle reasonably large numbers ...

Stuart

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