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Apr
15
comment Solve for velocity, if acceleration is a function of velocity?
Question should probably also provide the initial velocity. The answers appear to arbitrarily be using an initial velocity of 30mps.
Mar
27
comment If the earth's rotational speed increased by 2% each day starting today…what would be the difference in age 20 years from now?
@SUMGUY: "I think you would probably do better to simply not try to solve math problems that require reading comprehension." <-- The fact that that's an opinion doesn't mean it's not an insult. It is very clearly an insult. And insulting Eric Lippert is not going to get you far. He's kind of a big name. And he hasn't said anything rude, merely encouraged you to clarify the misleading wording in your question.
Jan
23
comment Can a complex number ever be considered 'bigger' or 'smaller' than a real number, or vice versa?
I'm a math novice, but I think this answer is saying "we can invent an arbitrary ordering", but there is no "logical" ordering like scalars have with each other. Would you be willing to clarify this thought in your answer?
Jan
23
comment Can a complex number ever be considered 'bigger' or 'smaller' than a real number, or vice versa?
I don't even know how to compare two complex numbers, much less one complex and one scalar! (Dustin observes that scalars are A+0i, so the comparison types are identical)
Jan
21
comment Can you be 1/12th Cherokee?
@cpast: I had assumed that the grandparent was a descendant of the great-grandparent, but I realize now that this was not necessary a correct assumption, I stand corrected.
Jan
20
comment Can you be 1/12th Cherokee?
If only one great grandparent counts as French, then you're exactly 1/8th French. Your own grandkids will be exactly 1/32nd French, assuming no other French descendancy enters the tree. The grandparent doesn't add anything. If you count the grandparent as full French, then those fractions become 1/4th and 1/16th respectively.
Jan
20
comment Can you be 1/12th Cherokee?
On the other hand, if 1/12th is an estimate, he could be 11/128th Cherokee, which is within 4% of 1/12th. or 21/256 is within 3%, 43/512 is within 1%...
Jan
17
comment Why can't a perpetual motion polyhedron exist?
I think the question might be missing a qualifier: "The COM of the polyhedron, when projected onto the table, lies outside of the polygon face touching the table" should be "The COM of the polyhedron, when projected onto the table, lies outside of the convex hull of polygon faces touching the table": example: a chair's center of mass is not over any part touching the floor. (Or I may have misunderstood you)
Dec
10
comment Given four points on a cubic function curve, how can I find the curve's function?
I also got stuck, it's trickier to eliminate the cs when the x inputs are not equidistant.
Oct
21
comment Dividing by 2 numbers at once, what is the answer?
@gnasher729 have a source on that? I would bet big money that Mathematica either interprets 4/1/5 as (4/1)/5, or refuses to evaluate because some people find it confusing. mathworld.wolfram.com/Precedence.html the makers of Mathematica have this site that says they use PEMDAS.
Oct
1
comment Google Interview Question about a town where if a couple has a girl born, they can't have more children…
This makes far more sense to me than the coin flipping
Aug
19
comment How far can one see over the ocean?
Unfortunately the scales are very nearly too large for a 1.8m observer watching a 1.8m object. On the other hand, your chart appears to show about 5 nautical miles, so about 9.26km, which roughly matches M.Herzkamp's answer of 9.6km.
Jul
30
comment Does 0% chance mean impossible?
@Ryan: And therefore there are infinitely more irrational numbers, and therefore you are infinitely more likely to pick one.
Apr
21
comment If there are obvious things, why should we prove them?
There are also things which are "obviously" true, and yet provably false: en.wikipedia.org/wiki/Monty_Hall_problem
Apr
9
comment Which number is larger and Why? 1.7 or 1.73205
@ChrisH: I would stick with unspecified/unknown/close. I would consider claiming they're "equal" incorrect, because that implies an accuracy that isn't there.
Apr
7
comment Are mathematical articles on Wikipedia reliable?
@user140943: en.wikipedia.org/wiki/Reliability_of_Wikipedia, and less ironically, news.cnet.com/2100-1038_3-5997332.html and pcworld.com/article/251796/…
Apr
3
comment Can a coin with an unknown bias be treated as fair?
Instead of asking if a possibly weighted sd-card can be used as a one-time fair coin, you should ask if you have a 50% chance of successfully guessing which side is the heavy side? They're almost the same question.
Feb
14
comment Very probable event occuring at least once during $n$ trials
which is 0.999... (with five hundred 9's total)
Jun
26
awarded  Popular Question
Aug
23
comment Using a weighted table?
So, you want to pick a random "payment" where the relative probabilities are given by "weight"? If that's not what you meant, please edit the question to clarify