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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.