Reputation
726
Top tag
Next privilege 1,000 Rep.
Create new tags
Badges
6 18
Newest
 Enthusiast
Impact
~24k people reached

20h
comment let $\alpha \in \Bbb{R} $ and $\cos(\alpha \pi) = \frac{1}{3}$, prove $\alpha $ is irrational
That's how I would proceed as well. What's your next step? You might consider using Euler's formula.
21h
comment How do I compute the angles of a pyramid from the angle between its sides?
Your attempts are worth mentioning, if only because it will encourage more people to help you.
21h
comment A closed form for the following Series
isc.carma.newcastle.edu.au/advancedCalc also finds nothing.
1d
comment Exponential differential equation
If you're just trying to solve for g(x), this isn't a differential equation at all. Solve for g(x) and then any function f will work.
1d
comment Probability to get from A to C.
Your analysis is correct, but the statement "Note that whether the 2 roads are passable/ not passable are independent" seems a little unrealistic.
2d
comment Lotto Probabilities
Well, 5 tickets with 6 numbers each is 30 numbers total out of 59 possible numbers, so, not a trivial chance of at least one number matching across the tickets.
2d
comment Probability of drawing $m$ of $A$ in $n$ cards given a deck of $d$ cards contain $a$ copies of $A$?
So you want to draw m cards out of a total and n-m cards out of the remaining d-a cards?
2d
comment Maximum likelihood estmiator of (θ1, θ2)
For a uniform distribution, all outcomes are equally likely, so I think you'd use the midpoint. But let someone else answer because I think I'm misunderstanding here.
2d
answered Momentum change in an inelastic collision
2d
comment Lotto Probabilities
Yes, provided you don't choose the similar or overlapping numbers on the 5 tickets.
2d
comment Maximum likelihood estmiator of (θ1, θ2)
Unless I'm seriously missing something, isn't this a uniform distribution if theta1 and theta2 are fixed?
2d
comment Lotto Probabilities
Technically, P(A|B) = P(A) + P(B) - P(A&B), so you'd have to subtract out the probability of winning more than once. If you choose nearly identical numbers on the 5 tickets, this could make a significant difference.
2d
awarded  Enthusiast
Feb
4
comment Sampling from a given pdf
OK, that's why I asked if you were looking for a general formula.
Feb
3
comment Calculate volume using flow rate and time difference in a container
If you know the flow rate, I don't see why this would be difficult to calculate?
Feb
3
comment Sampling from a given pdf
Go ahead and give me the constants (or any reasonable constants) and I'll show you what I mean, but I meant using Mathematica or any other tool/technique to numerically integrate your pdf.
Feb
3
comment Proving the primality of these large numbers?
mathworld.wolfram.com/ProbablePrime.html and mathworld.wolfram.com/PrimalityTest.html may be helpful.
Feb
3
comment Application of average and instantaneous rate of change
You could use the product rule to differentiate R(x), but it's probably easier just to multiply it out and then differentiate.
Feb
3
comment how to find value on piecewise cumulative density function
The integral of k/x^2 from 1 to infinity is k, not 1.
Feb
3
comment p-value of probability distribution
Hint: what is the mean and standard deviation of this distribution in terms of $\theta$ ?