Question

Short how to, amistre64 style :)

Answer 1

When asked to find GCD and LCM. I create the set of prime factors of the number, but i dont use exponents. I leave them as sets of primes

12: {2,2,3}
45: {3,3,5}

I then line up the sets like this

12: {2,2,3 }
45: { 3,3,5 }

placing like values in columns, and any extra iterations are just left hanging

the GCD is what they have in common, the intersection of the two sets

12: {2,2,3 }
45: { 3,3,5 }
---------------
GCD: { 3 } ; multiply the set altogheter, in thats case its just 3


the LCM is what they have joined together, the union of the two sets

12: {2,2,3 }
45: { 3,3,5 }
---------------
LCM:{2,2,3,3,5} ; multiply the set altogether

Answer 2

class today was trying to go thru "rules" such that: the greatest common divisor uses the smallest exponent; and the least common multiple uses the biggest exponents; and quite frankly; i find that rather confusing to keep track of

Answer 3

..and this is not the math section is it :/

Answer 4

nope. this is in Physics. Sorry, bub.

Answer 5

yeah, ill soon be old enough to be able to blame this on a full blown althimerz, but in the mean time :)

Answer 6

wow. your that old?? dayum.

Answer 7

i was cleaning my ears this morning and must have pushed too hard on the Qtip

Answer 8

LOL