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May
15
awarded  Citizen Patrol
May
6
awarded  Notable Question
Jul
7
awarded  Organizer
Jul
7
revised Calculate $\sum_{k=1}^n \frac 1 {(k+1)(k+2)}$
I add an [homework] tag based on "I have homework questions".
Jul
7
suggested approved edit on Calculate $\sum_{k=1}^n \frac 1 {(k+1)(k+2)}$
Feb
11
awarded  Popular Question
Mar
19
accepted How to calculate volume of $z = 0, z = 1, x+y+z=2, x = 0, y = 0$ area by tripple integral?
Mar
18
asked How to calculate volume of $z = 0, z = 1, x+y+z=2, x = 0, y = 0$ area by tripple integral?
Mar
8
awarded  Suffrage
Mar
7
revised How to analyze limit of function sequences?
added 13 characters in body
Mar
7
asked How to analyze limit of function sequences?
Jan
21
awarded  Scholar
Jan
21
accepted How to integrate by using imaginary and real part of $e^{ix}$
Jan
16
awarded  Benefactor
Jan
10
awarded  Promoter
Jan
7
revised How to integrate by using imaginary and real part of $e^{ix}$
added 18 characters in body
Jan
7
awarded  Editor
Jan
7
revised How to integrate by using imaginary and real part of $e^{ix}$
added 97 characters in body
Jan
7
awarded  Student
Jan
7
asked How to integrate by using imaginary and real part of $e^{ix}$