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Feb
11
comment Prove that if $\sum a_n$ converges, then $na_n \to 0$.
@gniourf_gniourf i am not arguing, just trying to learn -- why is this wrong? we have to start from some $n \ge N$
Feb
10
revised Prove the following property of simple functions
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Feb
10
answered Prove that if $\sum a_n$ converges, then $na_n \to 0$.
Feb
10
comment Deck of Cards Stats Probability Question
Welcome to Math.SE, please update your question with your thoughts about the problem and we will be happy to guide you with hints. For example, how do you in general find $\mathbb{P}[A|B]$ for events $A,B$?\
Feb
10
revised Deck of Cards Stats Probability Question
edited tags
Feb
9
answered Details of proof by contradiction
Feb
9
answered If $A+B+C=π$, verify the given
Feb
9
revised Speed of a parametric function?
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Feb
9
awarded  integration
Feb
8
comment minimum possible value of a linear function of n variables
So in a sense you are trying to solve the related linear problem. If you are the optimizer which direction is most profitable to explore?
Feb
8
revised minimum possible value of a linear function of n variables
edited tags
Feb
8
comment trigo substitution and identites?
+1 clever use of algebra, but to me geometry was more intuitive...
Feb
8
revised trigo substitution and identites?
added 26 characters in body; edited tags
Feb
8
answered trigo substitution and identites?
Feb
8
answered How can you enlarge a shape about a point other than (0,0), using matrices?
Feb
8
revised Should an interpolation coincide the original function on the given data points?
edited tags
Feb
8
comment Should an interpolation coincide the original function on the given data points?
As Ross Millikan said, there is a difference in terms. If you want to match the data exactly, it is called interpolation, if not -- approximation
Feb
8
comment Completing the square (and variants thereof)
not sure, i would let it go, but not a strong opinion... let someone deeper comment on that and see where it goes...
Feb
8
comment Finding limit of $\frac{a_n^3+5n}{a_n^2+n}$ for $(a_n)$ bounded.
@Hamza yes, indeed
Feb
8
answered Finding limit of $\frac{a_n^3+5n}{a_n^2+n}$ for $(a_n)$ bounded.