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Luna145
  • Member for 1 year, 7 months
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5 votes
Accepted

Paradox in the prove that integers are countable

5 votes
Accepted

A trigonometric non-linear differential equation

5 votes
Accepted

Evaluating $\mathrm{\int_0^1 ?(x)dx}$

3 votes
Accepted

is $x=y^2$ a function?

3 votes
Accepted

Determining whether the complex series $\sum_{n=0}^\infty \frac{n^2}{(n + i)(n + 200 + 2i)}$ converges

3 votes
Accepted

Solutions to the equation $-x^3\sin^2x-x\sin^2x+x^3\cos^2x+x\cos^2x+\cos x\sin x-x^2\cos x\sin x=0$

2 votes

Prove that the function $f(x)=x \ln x$ is not a polynomial

2 votes

What do we mean when we say "Let $x$ be an element of the set $\mathbb{R}$"?

2 votes

Are there infinitely many proofs of every true mathematical statement?

2 votes
Accepted

High school indefinite integration question: $\int 1/(x^2+6x+5)dx $ but must complete the square then use a trigonometric substitution.

1 vote
Accepted

Square root in $\mathbb C$

1 vote
Accepted

find slope of normal from slope of tangent

1 vote

Redefining an integral using different variables but the same logic and getting inconsistent results

1 vote

Domain of $(x+1)^x$

1 vote

How to find the inverse tangent of a complex number's rectangular form as it relates to pi?

1 vote

Do the graphs of $r=\sec 2\theta$ and $r=\csc 2\theta$ consist of two hyperbolas each?

0 votes
Accepted

Proof by Contradiction Involving Inequalities

0 votes
Accepted

Function inflection point?

0 votes

Calculate the volume bounded by surface

0 votes

Determine whether the series absolutely converge, conditionally converge or diverge