Reputation
1,012
Top tag
Next privilege 2,000 Rep.
Edit questions and answers
Badges
2 16 30
Impact
~45k people reached

  • 0 posts edited
  • 1 helpful flag
  • 1,093 votes cast
Jul
3
comment Help understanding this example of a linear operator which rotates each vector $v$ about the z-axis by an angle $\theta$
@Mark: thank you for the comment, unfortunately I do not know the formulae for rotations in any dimension at the moment...
Jul
3
asked Help understanding this example of a linear operator which rotates each vector $v$ about the z-axis by an angle $\theta$
Jul
1
comment Understanding this partial derivative problem
thank you again!
Jul
1
comment Understanding this partial derivative problem
sorry, i had read your answer and thought it was a done deal, but i seem to still be stuck: taking the step you suggest, i get $\frac{\partial \theta}{\partial x} = - \frac{-3 \sin \theta}{e^{2r}} \frac{1}{3\sin^{2}\theta + 2\cos^{2} \theta}$. is there some way that i can change $3\sin^{2}\theta + 2\cos^{2}\theta$ into the expression $2+\sin^{2}\theta$ as in the solution above?
Jul
1
accepted Understanding this partial derivative problem
Jul
1
comment Understanding this partial derivative problem
thank you for helping me with this arturo
Jul
1
comment Understanding this partial derivative problem
this definitely does help, thank you
Jun
30
asked Understanding this partial derivative problem
Jun
4
accepted Does this equality always hold?
Jun
4
comment Does this equality always hold?
thank you mixedmath
Jun
4
comment Does this equality always hold?
excellent, thank you
Jun
4
comment Does this equality always hold?
@Fabian: thank you
Jun
4
asked Does this equality always hold?
May
24
awarded  Vox Populi
May
15
revised What is the best way to show that no positive powers of this matrix will be the identity matrix?
rolled back to a previous revision
May
14
accepted Are bounded sequences always strictly less than some fixed number $M$?
May
14
comment Are bounded sequences always strictly less than some fixed number $M$?
ok that totally makes sense, thank you for this answer.
May
14
asked Are bounded sequences always strictly less than some fixed number $M$?
May
9
awarded  Fanatic
May
6
accepted Who was the mathematician who thought “god” was out to get him?