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Aug
13
comment Find $\int\frac{x^2+x}{(e^x+x+1)^2}dx$
$a^2 (b + c + d)^2 \neq (ab + ac + ad)^2$. The expression for the second integral is incorrect.
Aug
13
comment Jobs in industry for pure mathematicians
@Vectornaut Let's be clear about what is pure math and what is not. Computational complexity theory (of which quantum computation is a part) is a branch of computer science. Computation theory is an application of math. Also in one of your very example papers, did you notice the word x box 360 live in the title? Think that's a coincidence? I think not. It's another marketing strategy to promote their products.
Aug
13
awarded  Teacher
Aug
13
answered Jobs in industry for pure mathematicians
Mar
13
revised product of different order Bessel function integral
changed picture formula to latex
Mar
13
suggested approved edit on product of different order Bessel function integral
Jan
30
accepted In a 4-card hand consisting of only numbered cards (2 - 10), what is the probability that the sum of red cards is twice the sum of black cards?
Jan
30
comment In a 4-card hand consisting of only numbered cards (2 - 10), what is the probability that the sum of red cards is twice the sum of black cards?
Thank you. Your count matches what I have from my program which solved it by brute-force, so it has to be correct.
Jan
30
revised In a 4-card hand consisting of only numbered cards (2 - 10), what is the probability that the sum of red cards is twice the sum of black cards?
edited body
Jan
30
comment In a 4-card hand consisting of only numbered cards (2 - 10), what is the probability that the sum of red cards is twice the sum of black cards?
No. You do not replace the cards. You draw cards in the traditional sense of drawing cards from a deck, meaning once card A is drawn, it cannot be drawn again. Independent means the current set of drawn cards doesn't affect the result of drawing the next card. And yes, you are essentially only drawing from 36 cards.
Jan
30
asked In a 4-card hand consisting of only numbered cards (2 - 10), what is the probability that the sum of red cards is twice the sum of black cards?
Mar
16
accepted Integer optimization problem
Mar
16
comment Integer optimization problem
Thanks, it should be called "integer linear programming" to be more exact.
Mar
16
revised Integer optimization problem
added 40 characters in body
Mar
16
asked Integer optimization problem
Feb
19
awarded  Commentator
Feb
19
comment Binomial random variable with number of trials being a Poisson random variable
Great! Thank you.
Feb
19
accepted Binomial random variable with number of trials being a Poisson random variable
Feb
19
comment Binomial random variable with number of trials being a Poisson random variable
Thanks David! This is what I needed help with.
Feb
19
comment Binomial random variable with number of trials being a Poisson random variable
Can you please show some outline of the steps needed to go from second to the third line?