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Jan
24
reviewed Close Solid mensuration (circles)
Jan
5
reviewed Reopen Determining functions involved in a definite integral using substitution;
Jan
5
reviewed Leave Closed Propreties of sequences in a metric space
Jan
2
reviewed Close How do you prove the eigenvalues and eigenvectors of matrices are the same?
Jan
2
reviewed Leave Open Does every real number have a decimal expansion?
Dec
30
answered Why is $\lim_{x\to 1} (x^2 - 1)/(x-1) = 2$?
Dec
30
revised Why is $\lim_{x\to 1} (x^2 - 1)/(x-1) = 2$?
edited title
Dec
30
answered prove if $AB$ is invertible, $A,B$ is also invertible.
Dec
29
reviewed Leave Open Integrating a cross product.
Dec
29
comment Integrating a cross product.
@HansLundmark: The OP does point out that they are aware of this other questions.
Dec
29
reviewed Leave Open 3-variable non-symmetric inequality
Dec
29
answered Integrating a cross product.
Dec
29
reviewed Close How to prove $x^ax^b = x^{a+b}$
Dec
29
reviewed Leave Open What problems, ideas or questions first got you interested in algebraic geometry?
Dec
29
reviewed Close Elementary properties of modular addition and multiplication
Dec
29
reviewed Leave Open Conisder an equation.
Dec
28
comment How does constant affect the limit
@Bot: That's right.
Dec
28
comment How does constant affect the limit
@Bot: No, I divide top and bottom by $n$, so the $n$ (in the bottom) becomes a $1$ and the $x$ becomes $x / n$.
Dec
27
comment A question on Schur's lemma and semisimple modules
@JC574: Sorry, yes, we have isomorphisms. I just tend to think in terms of dimensions. You just get copies of $\mathbb{C}$.
Dec
27
answered How does constant affect the limit