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visits member for 1 year, 5 months
seen Jul 21 at 23:26

Jul
2
awarded  Curious
Jun
3
comment How to get Speed from Velocity with Integral
Ummm, not sure what they told you. In one dimension, speed is either the same as velocity (if the body in question is moving in the positive direction) or the negative of velocity (if moving in the negative direction). In more than one dimension, where velocity is a vector, speed is the magnitude of the velocity.
May
8
answered Trig Identities Problems
May
8
answered Trigonometric Circle
May
7
answered Differentiating $90 + 45 \cos(t^2/18)$ using the chain rule?
May
7
answered Proof a sequence converges to a limit
Apr
14
answered Show that f(x)=1-x+5x^2
Apr
10
comment What job did you get with a degree in math?
I gave this answer a year ago, as you might notice. It looks like someone has edited the question in the mean time. And "maths" is the British spelling for sure, but not everybody is British, in case you haven't noticed. "Math" is correct in several other countries. As I said, I do not object to "maths" being correct, but to "math" being marked incorrect. And you guys apparently take this far more seriously than I.
Apr
9
comment Integral $\int_{-\infty}^\infty dx e^{-nx^2/2}(z-ix)^n$
Shot in the dark here, but when you see $e^{-x^2}$, that's often a clue that saddle point integration is called for.
Mar
16
comment Need to re-write an expression to get rid of 0/0 problem
Was not aware of Wolfram alpha. It is a great tool. Unfortunately, all of its alternate expressions ahve the same problem. But I will definitely keep it in mind for the future. Thanks!
Mar
16
accepted Need to re-write an expression to get rid of 0/0 problem
Mar
14
comment Need to re-write an expression to get rid of 0/0 problem
It's a very specific expression. Thanks.
Mar
14
asked Need to re-write an expression to get rid of 0/0 problem
Mar
3
comment Infinite sequences in geometry
OK, with that change in the angle, you should be able to see that each time you do a new iteration, the new length is AC/AB times the previous length. It's another sum of a power series.
Mar
3
comment Infinite sequences in geometry
Is it possible that those angles should be 72 instead of 75? With that change, the problem becomes much easier.
Mar
3
comment Infinite sequences in geometry
Ah, I see. Answer edited.
Mar
3
revised Infinite sequences in geometry
re-done in light of a comment
Mar
3
comment Infinite sequences in geometry
I'm trying to visualize the process you're describing in 2, and I can see it a couple of different ways. Can you describe again, or maybe supply a a diagram?
Mar
3
answered Infinite sequences in geometry
Mar
3
comment Logarithmic funtions
Could you re-type the function in question? Could be read in a couple of different ways.