Reputation
3,488
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
2 11 39
Impact
~125k people reached

Apr
14
comment Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
Please see my edit, it seems my question wasn't too clear.
Apr
14
comment Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
@DavidMitra: Please post that as an answer, it's pretty much what I'm looking for.
Apr
14
revised Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
added 265 characters in body
Apr
14
asked Proving limit doesn't exist using the $\epsilon$-$\delta$ definition
Apr
13
comment What exactly is meant by 'Integrate the Equation of Motion'?
I asked a similar question. I think the best you can get is velocity with respect to height: $r' = r'(r)$. math.stackexchange.com/questions/114610/…
Apr
8
comment Some basic practical applications of Calculus
Math doesn't have to be useful. You said it yourself: You study calculus because you just enjoy it.
Apr
5
accepted Would like some pointers on this geometry problem
Apr
5
comment Would like some pointers on this geometry problem
This was helpful, thank you!
Apr
5
comment Would like some pointers on this geometry problem
Also, how did you get $\cos \beta \cdot \cos (\beta + 60°) \le \frac1{4}$?
Apr
5
comment Would like some pointers on this geometry problem
Sorry, it's $AB \cdot BC = BD^2$, the blockquote messed it up. But the idea of assigning some random value to a side might be helpful.
Apr
5
revised Would like some pointers on this geometry problem
deleted 4 characters in body
Apr
5
asked Would like some pointers on this geometry problem
Mar
26
revised A problem with a trigonometric equation
latex and translated the trig functions' names
Mar
26
suggested approved edit on A problem with a trigonometric equation
Mar
22
comment Prove that the set of positive real numbers is not bounded from above
@PeterT.off: Well, wouldn't you have to show that $\mathbb{N}$ is unbounded as well, using a similar proof?
Mar
21
revised Prove that the set of positive real numbers is not bounded from above
added 213 characters in body
Mar
21
comment Prove that the set of positive real numbers is not bounded from above
@Arturo: I didn't say it, but I can use the basic axioms of the real numbers.
Mar
21
asked Prove that the set of positive real numbers is not bounded from above
Mar
19
answered Using polar form to prove $|z| = 1 \implies \text{Re}\left(\frac{1-z}{1+z}\right) = 0$
Mar
16
comment See the sign of the double derivative from just looking at the graph?
In this case, it looks like it, but I don't think you can be completely sure without knowing the function's formula.