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May
19
comment Power series as fractions
@user222031 fixed, thanks for the correction
May
19
revised Power series as fractions
added 12 characters in body
May
19
comment Power series as fractions
@user222031 indeed, this is how i caught the bug in the first place
May
19
comment Power series as fractions
@L887 you missed $1$ when factoring out, should be $(x^3-x^6)(1+x+\ldots)$
May
19
answered Power series as fractions
May
19
answered cubic approximation with four points(approximating sine function with polynomials)
May
19
comment Evaluating a limit involving a definite integral
@fargg he probably assumed the Riemann-Lebesgue lemma is generally known...
May
19
comment Evaluating a limit involving a definite integral
Russian typo in the middle of the 2nd formula, you likely meant to write "and" instead :)
May
19
revised If $f:X \to [0,1]$ be an onto continuous map and $\{f^{-1} (y)\}$ is compact then Is $X$ compact?
edited title
May
18
comment make the mean of 2 data sets the same
@TomasJorovic fixed. I thought you only asked for 40 to be preserved
May
18
revised make the mean of 2 data sets the same
edited body
May
18
answered make the mean of 2 data sets the same
May
18
comment Can someone provide me a simplest way to calculate:
can you show your own work on a problem?"
May
18
reviewed Approve Can someone provide me a simplest way to calculate:
May
18
answered What does “$\mathbb{1}$” mean in this document?
May
7
answered Expected value of finding the second ball drawn question
May
7
answered Find an equivalent formula for the sum = 2+4+6+…+2n?
May
6
comment If I know $AB$, how can I calculate $BA$?
Easier question, some ideas for a general answer: math.stackexchange.com/q/731349/16192
May
6
comment If I know $AB$, how can I calculate $BA$?
@José you will have 12 variables and 9 constraints for the system of equations
May
6
comment Sigma algebra generated by a quadratic function
I vaguely recall it is sufficient to represent all open intervals.