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May
20
revised Division by zero factoring problem
added 4 characters in body
May
20
answered Division by zero factoring problem
May
20
revised Number of roots of a polynomial of non-integer degree
added 12 characters in body; edited title
May
20
revised Number of roots of a polynomial of non-integer degree
added 12 characters in body; edited title
May
19
answered Is there an easier way to prove this induction?
May
19
comment Convex function inequality for Euclidean norm: $\|(f(x_1),\cdots,f(x_n))\|_2\leq f(\|x\|_2)$
feels similar to Jensen's inequality
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: