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2d
comment New primality test, now what (publishing and proof)?
If you type it up, you can post it to the Arxiv.
2d
reviewed Leave Open Minimum Value Given Average
2d
reviewed Leave Open Is this logically valid?
2d
reviewed Close Measurability of function with two variables.
2d
reviewed Leave Open ∀x(A→ B) ├ ¬∃x(A ∧ ¬B) prove with natural deduction
2d
comment Is this logically valid?
Yes, if $n>0$ and $a>b$, then $a+n>b$.
Jan
21
comment Evaluating the limit $\displaystyle \lim _{x\to \infty }\frac{(x^2+1)}{(x-1)}\sin(\frac{1}{x})$
Your first application of L'Hopital's Rule is not valid since it is of the form $\frac{\infty\cdot 0}{\infty}$.
Jan
20
revised Rank of linear transformations from vector space to same vector space
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Jan
20
revised Computing the integral of $\int \frac{25x^2}{(x+3)(x-2)^2}\,dx$
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Jan
20
comment How would the intersection of two uncountable sets form a countably infinite set?
@OohAah When I submitted my comment, I thought, for a second, that I somehow submitted it twice.
Jan
20
revised Computing the integral of $\int \frac{25x^2}{(x+3)(x-2)^2}\,dx$
added 1 character in body; edited title
Jan
20
reviewed Approve Computing the integral of $\int \frac{25x^2}{(x+3)(x-2)^2}\,dx$
Jan
20
comment How would the intersection of two uncountable sets form a countably infinite set?
@committedandroider Let $A=[0,1]\cup \{2,3,4,\ldots\}$ and $B=[5,6]\cup \{7,8,9,\ldots\}$. Then both $A$ and $B$ are uncountable, but the intersection $A\cap B$ is countable.
Jan
20
comment How would the intersection of two uncountable sets form a countably infinite set?
@committedandroider Yes, but when you union it with $[0,1]$ the set becomes uncountable.
Jan
19
comment To determine if set is open , closed
@godonichia Yes. Each quadrant is open. And the union of any number of open sets is open.
Jan
19
answered To determine if set is open , closed
Jan
18
answered Is this attempt of showing the square root of two is irrational valid?
Jan
16
revised Use Newton's method to find root for the following equations
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Jan
16
revised How to prove that a function is irrational?
added 17 characters in body; edited title
Jan
15
revised Why do Fourier Series work?
added 42 characters in body