# tendua

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bio website location Allahabad, India age member for 1 year, 9 months seen Dec 30 '12 at 4:37 profile views 42

Student of B.Tech (Information Technology) at Indian Institute of Information Technology, Allahabad.

# 31 Actions

 Oct17 comment Casio fx 991ms FactorialI've casio fx-991ES and it has a button for factorial. If your calculator supports factorial computation it must have a key for that :) Oct13 comment Number of ways to write 5 digit number with restriction?thanks, got it. I don't know why I treated this as a tough problem :( Oct13 accepted Number of ways to write 5 digit number with restriction? Oct13 awarded Commentator Oct13 comment Number of ways to write 5 digit number with restriction?we can't use 0 at first place as it will make a 4 digit number. 0 can be used anywhere else. Oct13 asked Number of ways to write 5 digit number with restriction? Oct6 comment Finding eigenvalues of matrix of matrix.yes, you were right. I was thinking this as a matrix of matrix and so couldn't figure out hint. thanks :) Oct6 accepted Finding eigenvalues of matrix of matrix. Oct6 comment Finding eigenvalues of matrix of matrix.Can I ask for a little more hint? Oct5 asked Finding eigenvalues of matrix of matrix. Aug1 accepted Number of paths in regular graphs, where starting and ending nodes are same Aug1 comment Number of paths in regular graphs, where starting and ending nodes are sameI'm little bit weak at graphs so would you please explain what does it stands for taking nth power of adjacency matrix and then looking at diagonal element. Aug1 asked Number of paths in regular graphs, where starting and ending nodes are same Mar16 comment Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction.@MattN.: thanks for the valuable information. Mar16 comment Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction.@All: Does closing the question means that there couldn't be proofs without induction and hence there should be no new answers so the question isn't open for discussion anymore? Mar15 comment Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction.@BillDubuque: Actually sometimes ago, on stackoverflow.com some people told me that not accepting the answers would decrease my acceptance percentage and people don't pay much attention towards those who have low acceptance rate. From then onwards, I always select one of the answers as accepted one. Mar15 asked Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction. Mar14 answered Help Needed To Prove A Trigonometric Identity Mar14 awarded Supporter Mar14 comment counting the patternsthanks Brian, I was having a hard time in finding these recurrences and I don't have enough reputation to vote up your answer :(