245 reputation
16
bio website people.virginia.edu/~chg5w
location Charlottesville, VA
age 40
visits member for 1 year, 9 months
seen 11 hours ago
stats profile views 20

PhD candidate, computer engineering. iOS developer.


Mar
6
awarded  Nice Answer
Dec
18
comment In the induction proof for $(1+p)^n \geq 1 + np$, a term is dropped and I don't understand why.
Thanks! This was my original confusion. Once I understood that we already know that $(1+p)^n \geq 1 + rp + p + rp^2$ so we can drop the last term without harm, it started making sense. I was originally thinking that we were trying to show that the left side was greater than the right side, which is why I didn't understand how we could drop the last term.
Dec
18
awarded  Student
Dec
18
awarded  Yearling
Dec
18
awarded  Supporter
Dec
18
comment In the induction proof for $(1+p)^n \geq 1 + np$, a term is dropped and I don't understand why.
@Scott: got it. Interesting that the book says, "Dropping the positive term $rp^2$ only strengthens this inequality." Cheers!
Dec
18
accepted In the induction proof for $(1+p)^n \geq 1 + np$, a term is dropped and I don't understand why.
Dec
18
comment In the induction proof for $(1+p)^n \geq 1 + np$, a term is dropped and I don't understand why.
ah, I get it now. Because we already know that the left hand statement is larger than the sum on the right, dropping one of the right hand terms makes it a stronger inequality. I was getting it backwards. Thanks!
Dec
18
asked In the induction proof for $(1+p)^n \geq 1 + np$, a term is dropped and I don't understand why.
Aug
4
awarded  Scholar
Aug
4
comment Standard deviation of a rate
Thanks for the info!
Aug
4
accepted Standard deviation of a rate
Aug
4
comment Standard deviation of a rate
@gary - thanks, I'll take a look!
Aug
4
comment Standard deviation of a rate
Yes, although that is part of the problem--I want to express how much the throughput varies.
Aug
4
asked Standard deviation of a rate
Aug
1
comment Books or site/guides about calculations by hand and mental tricks?
@Algific -- glad you liked it. I didn't know there was a Kindle edition.
Jul
31
awarded  Teacher
Jul
31
answered Books or site/guides about calculations by hand and mental tricks?
Jul
31
awarded  Autobiographer