When I was in the 7th grade, my math teacher was a 108 year old Catholic nun. (talk about dried out). Anyway, I can remember the day in class she taught us how to calculate a square root. Of course with calculators, it's now a totally worthless exercise, but it was interesting.
64 is the perfect square of 8. 81 is the perfect square of 9.
But numbers which are not perfect squares always have irrational numbers as their square roots. So most people are familiar with 2, 3, and 5, all having irrational square roots.
Integers or whole numbers which are not perfect squares have irrational numbers as their square roots. But there can be other non-integer rational numbers which are the perfect squares of other non-integer rational numbers.
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And, CJ, shouldn't that be "Ate something?" *g*
I wonder how her teachers in school felt about that t-shirt - at least mildly pissed?
That's just wrong.
http://youtu.be/pXtFSE7VlL0
https://www.youtube.com/watch?v=CACQmiaU…
http://en.wikipedia.org/wiki/Personal_fi…
Just thought you all needed to know .... ;-D
64 is the perfect square of 8. 81 is the perfect square of 9.
But numbers which are not perfect squares always have irrational numbers as their square roots. So most people are familiar with 2, 3, and 5, all having irrational square roots.
SJG
I stand corrected.
SJG