Ken Bloom
Reputation
Next privilege 125 Rep.
Vote down
 Aug27 comment Is the statement “1/3 of the natural numbers are divisible by 3” true? Is anything similar to it true? This formal statement is exactly the definition of natuarl density or asymptotic density. Aug2 comment How to tell $i$ from $-i$? These sound like high school students, right? Jun17 comment show if function is even or odd You can always graph the function and see that it's definitely not even, that it in fact looks like it's odd (something others have proved below). May13 comment Is it wrong to tell children that $1/0 =$ NaN is incorrect, and should be $∞$? I suspect part of the confusion may be because of what IEEE 754 floating point numbers do when you divide by zero: 1/0 is postive infinity, (-1)/0 is negative infinity, and 0/0 is NaN. Mar12 comment Computing a very large number bc can also compute it quickly. By the way, the secret of these languages (as opposed to C, and Java) is that they use numeric types that allow you to express arbitrary large integers by default (or, in the case of Ruby, they switch to those types transparently): (1010).class => Fixnum, and (6553465534).class => Bignum. Jul3 comment Why can ALL quadratic equations be solved by the quadratic formula? @KCd: He might not know enough about math to understand complex numbers, in which case he can't always use the quadratic formula. Oct14 awarded Supporter Oct14 awarded Autobiographer