Reputation
1,491
Top tag
Next privilege 2,000 Rep.
Edit questions and answers
Badges
11 30
Impact
~39k people reached

Jan
10
comment Group theory class equation help?
what do you mean by $(i \in I)$?
Jan
9
comment Evaluating $\int\sqrt{150^2-x^2} \cdot dx$
yes i do understand that, i just wanted the OP to know what really was going on. By the way, your answer, though neat, does lack a bit of description. It would've been better if you had elaborated a bit more. Maybe you had no time whilst writing down the answer but still, it would have avoided discussions like ours :)
Jan
9
awarded  Nice Question
Jan
8
comment Evaluating $\int\sqrt{150^2-x^2} \cdot dx$
It's the same thing if you do it this way or by directly substituting $ x = 150sint $. In fact, the method you suggested is just an un-required step into getting the same answer. Say you replaced $x$ with $150\cdot y$. Then you'd get something like $\sqrt{150^2-150^2\cdot y^2} = 150\sqrt{1-y^2}$. You then end up at the same place where Clive started. Hope it helps! Cheers
Jan
8
asked Why is this definition of an additive inverse significant
Dec
31
awarded  Nice Question
Dec
30
awarded  Teacher
Dec
30
comment Why does the Dedekind Cut work well enough to define the Reals?
Thank you for a more rigorous proof. I think I need to get used to such rigor in my mathematics(as opposed to the "less rigorous" mathematics at high school) , and this was very helpful. Thank you. I hope I am not rushing into things but I am enjoying my ride so far :)
Dec
30
awarded  Editor
Dec
30
comment Why does the Dedekind Cut work well enough to define the Reals?
Believe it or not it did help a bit. Thanks anyway!
Dec
30
revised Why does the Dedekind Cut work well enough to define the Reals?
added 326 characters in body; edited tags
Dec
30
asked Why does the Dedekind Cut work well enough to define the Reals?
Dec
30
awarded  Scholar
Dec
30
accepted Basic Question on Gradients
Dec
24
revised Basic Question on Gradients
edited tags
Oct
2
awarded  Supporter
Oct
2
asked Basic Question on Gradients
May
29
awarded  Student
May
28
awarded  Autobiographer