"I guess what is meant by the first question is to verify that N is prime one only needs to check as factors primes below sqrt(N). This is an essential point but whether it's a "key" or why I could not say.
Squaring yout second…"
There is a growing need to learn math for those who have had a bad experience with math in the past, or who have been away from math for a long time.I am interested in improved techniques for teaching math to this group of people.See More
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