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amistre64
Short how to, amistre64 style :)
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
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
..and this is not the math section is it :/
nope. this is in Physics. Sorry, bub.
yeah, ill soon be old enough to be able to blame this on a full blown althimerz, but in the mean time :)
wow. your that old?? dayum.
i was cleaning my ears this morning and must have pushed too hard on the Qtip