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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?
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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 $e^{ix}$
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Jan
7
awarded  Editor
Jan
7
revised How to integrate by using imaginary and real part of $e^{ix}$
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Jan
7
awarded  Student
Jan
7
asked How to integrate by using imaginary and real part of $e^{ix}$
Dec
12
comment Why study linear algebra?
It is very useful in linear control theory. Systems are described by so called state which is vector and change of state is described by matrices. Than questions about stability becomes questions about eigenvalues. etc.
Dec
11
awarded  Supporter