Re: Modulus/Cross-Product ?

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Modulus/Cross-Product ?

by ChristineBunny

Dec 29, 2014

High-school education, Procedural-programing education, Fair bitwise-operation education,

tag words involved with this question: [ &37; Operator, Matrices, remainder of division, Modulus/Cross-Product ]

tutoring request: Please help me understand the pattern of these results. What aspects of math or bit manipulation is occurring to result in these answers? Please help me visualize the process occurring to achieve these results. These answers are calculated by the Secondlife physics engine consistently.

2 &37; 100=2 3 &37; 100=3 100 &37; 2=0 100 &37; 3=1 4 &37; -4=0 4 &37; -3=1 4 &37; -2=0 4 &37; -1=0 4 &37; 1=0 4 &37; 2=0 4 &37; 3=1 4 &37; 4=0 4 &37; 5=4 4 &37; 6=4 4 &37; 7=4 4 &37; 8=4 4 &37; 9=4 4 &37; 10=4 4 &37; 11=4 4 &37; 12=4 4 &37; 16=4

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Modulo The operator you are designating &37; is usually (in the US anyway) called mod. So where you write 10 &37; 2 I would normally write 10 mod 2.

Basically what the value of "a mod b" is the remainder when a is divided by b.

Looking at some of your examples, the last 9 of them had a value of 4 because if you divide 4...See More

Dec 30, 2014

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ChristineBunny Mr/Ms Modulo Dec 30, 2014 That was a fantastically educational answer! and yes it took this long for me to get back into it considering the Christmas insanity! Thank you so much for a very helpful response! This is going to be very useful to me in my work! thank you! *happy hugs!* Good tutorial!

so 16 mod 2 = 0 16 mod 8 = 0 17 mod 8 = 1 7...See More Mr/Ms Modulo Dec 30, 2014 That was a fantastically educational answer! and yes it took this long for me to get back into it considering the Christmas insanity! Thank you so much for a very helpful response! This is going to be very useful to me in my work! thank you! *happy hugs!* Good tutorial!

so 16 mod 2 = 0 16 mod 8 = 0 17 mod 8 = 1 75 mod 50 = 25 75 mod 25 = 0 2 mod 490834752349 = 2

thank you for helping me understand! *^-^*

On 12/30/14, Modulo wrote: > The operator you are designating &37; is usually (in the US > anyway) called mod. So where you write 10 &37; 2 I would > normally write 10 mod 2. > > Basically what the value of "a mod b" is the remainder when > a is divided by b. > > Looking at some of your examples, the last 9 of them had a > value of 4 because if you divide 4 by a number that is > bigger than 4 you will always get a remainder of 4 > > You also had 2 mod 100 as 2, which makes sense since if you > divide 2 by 100 you have a remainder of 2. > > 18 mod 4 would be 2 (4 goes into 18 4 times (which we do > not care about) with a remainder of 2, which is the value > of the expression. > > The tricky ones are the negatives, but it still holds > together (as math should). Let's look at 4 mod -3. How > many times does 03 divide into 4? -1. And what is the > remainder? 1. > > 4 mod -2 : -2 goes into 4 -2 times with a remainder of 0 so > 4 mod -2 = 0 > > I hope this helps. This is one of those concepts that is > really simple once it clicks. Hopefully now it will click. > Feel free to ask follow-ups. > > On 12/29/14, ChristineBunny wrote: >> High-school education, >> Procedural-programing education, >> Fair bitwise-operation education, >> >> tag words involved with this question: >> [ &37; Operator, Matrices, remainder of division, >> Modulus/Cross-Product ] >> >> tutoring request: >> Please help me understand the pattern of these results. >> What aspects of math or bit manipulation is occurring to >> result in these answers? Please help me visualize the >> process occurring to achieve these results. >> These answers are calculated by the Secondlife physics >> engine consistently. >> >> 2 &37; 100=2 >> 3 &37; 100=3 >> 100 &37; 2=0 >> 100 &37; 3=1 >> 4 &37; -4=0 >> 4 &37; -3=1 >> 4 &37; -2=0 >> 4 &37; -1=0 >> 4 &37; 1=0 >> 4 &37; 2=0 >> 4 &37; 3=1 >> 4 &37; 4=0 >> 4 &37; 5=4 >> 4 &37; 6=4 >> 4 &37; 7=4 >> 4 &37; 8=4 >> 4 &37; 9=4 >> 4 &37; 10=4 >> 4 &37; 11=4 >> 4 &37; 12=4 >> 4 &37; 16=4

Jan 12, 2015

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You're welcome and thanks for coming back and saying something Often people post questions, get answers, and are never heard from again. When that happens you never know if you just were not helpful or are they just rude. It is nice to know that this was helpful.

On 1/12/15, ChristineBunny wrote: > > > Mr/Ms Modulo Dec 30, 2014 > That was a f...See Moreand thanks for coming back and saying something Often people post questions, get answers, and are never heard from again. When that happens you never know if you just were not helpful or are they just rude. It is nice to know that this was helpful.

On 1/12/15, ChristineBunny wrote: > > > Mr/Ms Modulo Dec 30, 2014 > That was a fantastically educational answer! and yes it took > this long for me to get back into it considering the Christmas > insanity! Thank you so much for a very helpful response! This is > going to be very useful to me in my work! thank you! *happy > hugs!* Good tutorial! > > so > 16 mod 2 = 0 > 16 mod 8 = 0 > 17 mod 8 = 1 > 75 mod 50 = 25 > 75 mod 25 = 0 > 2 mod 490834752349 = 2 > > thank you for helping me understand! *^-^* > > > > On 12/30/14, Modulo wrote: >> The operator you are designating &37; is usually (in the US >> anyway) called mod. So where you write 10 &37; 2 I would >> normally write 10 mod 2. >> >> Basically what the value of "a mod b" is the remainder when >> a is divided by b. >> >> Looking at some of your examples, the last 9 of them had a >> value of 4 because if you divide 4 by a number that is >> bigger than 4 you will always get a remainder of 4 >> >> You also had 2 mod 100 as 2, which makes sense since if you >> divide 2 by 100 you have a remainder of 2. >> >> 18 mod 4 would be 2 (4 goes into 18 4 times (which we do >> not care about) with a remainder of 2, which is the value >> of the expression. >> >> The tricky ones are the negatives, but it still holds >> together (as math should). Let's look at 4 mod -3. How >> many times does 03 divide into 4? -1. And what is the >> remainder? 1. >> >> 4 mod -2 : -2 goes into 4 -2 times with a remainder of 0 so >> 4 mod -2 = 0 >> >> I hope this helps. This is one of those concepts that is >> really simple once it clicks. Hopefully now it will click. >> Feel free to ask follow-ups. >> >> On 12/29/14, ChristineBunny wrote: >>> High-school education, >>> Procedural-programing education, >>> Fair bitwise-operation education, >>> >>> tag words involved with this question: >>> [ &37; Operator, Matrices, remainder of division, >>> Modulus/Cross-Product ] >>> >>> tutoring request: >>> Please help me understand the pattern of these results. >>> What aspects of math or bit manipulation is occurring to >>> result in these answers? Please help me visualize the >>> process occurring to achieve these results. >>> These answers are calculated by the Secondlife physics >>> engine consistently. >>> >>> 2 &37; 100=2 >>> 3 &37; 100=3 >>> 100 &37; 2=0 >>> 100 &37; 3=1 >>> 4 &37; -4=0 >>> 4 &37; -3=1 >>> 4 &37; -2=0 >>> 4 &37; -1=0 >>> 4 &37; 1=0 >>> 4 &37; 2=0 >>> 4 &37; 3=1 >>> 4 &37; 4=0 >>> 4 &37; 5=4 >>> 4 &37; 6=4 >>> 4 &37; 7=4 >>> 4 &37; 8=4 >>> 4 &37; 9=4 >>> 4 &37; 10=4 >>> 4 &37; 11=4 >>> 4 &37; 12=4 >>> 4 &37; 16=4

Jan 13, 2015

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