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Mar
17
awarded  Good Answer
Nov
9
revised limit of sequences $c_n=(-2)^n$ and $d_n=\frac{n^3+1}{n^2}$
added 48 characters in body
Nov
8
accepted limit of sequences $c_n=(-2)^n$ and $d_n=\frac{n^3+1}{n^2}$
Nov
8
reviewed Approve How can I linearize the distance from two points?
Nov
8
comment limit of sequences $c_n=(-2)^n$ and $d_n=\frac{n^3+1}{n^2}$
Ah thanks for your hint; I deleted the sentence in my post
Nov
8
revised limit of sequences $c_n=(-2)^n$ and $d_n=\frac{n^3+1}{n^2}$
deleted 94 characters in body
Nov
8
comment limit of sequences $c_n=(-2)^n$ and $d_n=\frac{n^3+1}{n^2}$
wolframalpha.com/input/?i=limit+%28-2%29%5En ; I entered the sequence there
Nov
8
comment limit of sequences $c_n=(-2)^n$ and $d_n=\frac{n^3+1}{n^2}$
Thanks for your answer. For $c_n$ I don't have to show, that there is no convergence?
Nov
8
asked limit of sequences $c_n=(-2)^n$ and $d_n=\frac{n^3+1}{n^2}$
Nov
7
comment Induction for arithmetic sequence?
Ok, here is my try:$a_{n+1}=qa_n=q(a_0q^n)=a_0q^{n+1}$
Nov
7
comment Induction for arithmetic sequence?
ok, that true ($a_0=a_0 \cdot 1=a_0$). So the next step is to proove $a_{n+1}=a_0 \cdot q^{n+1}$?
Nov
7
comment Induction for arithmetic sequence?
So the case $n=0$ is: $a_1=0 \cdot a_0 \Rightarrow a_0=a_0$ which is true?
Nov
7
asked Induction for arithmetic sequence?
Jul
23
awarded  Yearling
Jun
1
comment Determinant of block tridiagonal matrices
Interesting question. How did you get this kind of matrices?
May
19
awarded  Popular Question
Apr
25
comment How to find linear equation from text
solve the system of linear equations by using your two given Points
Apr
20
revised Find the max and min of $f(x) = x^5 -x^4+x^2-x$
added 2 characters in body; edited title
Apr
20
reviewed Approve Finding local maximum and minimum
Apr
18
comment maximum area of semi-circle in square
Thanks a lot for the answer.