/sci/ - Science & Math

Bill looks like he's about to punch the other guy

No charmap, shit.
The equation is x^3 + b*x^2 - x + a = 0

MFW Stephen Hawkings invented string theory
MFW human cells have cell walls
MFW

>If radioactive decay rates were higher in the past

MFW

question relating to summation laws and Riemann sums.

<span class="math">\sum_{i = 1}^n {c\over n} = {cn}][/spoiler]
<span class="math">\sum_{i = 1}^n {(ci)\over n^2} = {(c\over n^2) ((n(n+1))\over 2)}[/spoiler]
<span class="math">\sum_{i = 1}^n {(ci^2)\over n^3} = {(c\over n^3) ((n(n+1)(2n+1))\over 6)}[/spoiler]
.....

could easily be summed up with:

<span class="math">\sum_{i = 1}^n {c\over n} = {c\over 1}][/spoiler]
<span class="math">\sum_{i = 1}^n {(ci)\over n^2} = {c\over 2}[/spoiler]
<span class="math">\sum_{i = 1}^n {(ci^2)\over n^3} = {c\over 3}[/spoiler]
<span class="math">\sum_{i = 1}^n {ci^3\over n^4} = {c\over 4}[/spoiler]
...
<span class="math">\sum_{i = 1}^n {ci^(x-1)\over n^x} = {c\over x}[/spoiler]

>>2008943
>In the boy-girl paradox, whether the answer is 1/3 or 1/2 depends upon whether the family was randomly selected from a pool of families which meet the criteria, or whether it was selected from the pool of all families and the statement was only made because it happened to be true.

Similarly, with the Monty Hall problem, you need to know if picking the right/wrong door affects the probability of whether you are given the option to switch, whether the host always opens a losing door or whether he selects it randomly, etc.

When people post this problem on newsgroups, 4chan, etc, they usually leave out this information, leading to different people giving different answers due to different assumptions.
What the fuck are you talking about? This is simple, third grade probability.
>mfw he doesn't understand why it is 1/2 when order of children is known and 1/2 when otherwise.

>>1648733
>mfw he doesn't understand the circulatory system