user1068636

### Questions (98)

 11 How do you construct a function that is continuous over $(0,1)$ whose image is the entire real line? 5 How do I see if $a^3+b^3=c^3+d^3$ has any solutions where $1 \le a,b,c,d \in \mathbb{Z} \le 1000$ and $a \ne b \ne c \ne d$? 5 How do you factor $\frac{2x^2-x-1}{x^2-9} \cdot \frac{x+3}{2x+1}=$? 4 Historically, what did mathematicians do before accepting the Completeness Axiom? 3 What is the best way to teach mathematical analysis via YouTube videos? [closed]

### Reputation (1,191)

 +10 What is the notation of a set of $n$ binary numbers where all of them are 0 except for one? +18 Why is it not true $\int_{T}|x(t)|^2 < \infty \implies$ $\int_{T}|x(t)| < \infty$ for a periodic function $x(t)$? -2 How do you algebraically prove $\frac{6+n}{(n+2)^2} > \frac{1}{n}$ for $n \ge 3$? +10 How do I see if $a^3+b^3=c^3+d^3$ has any solutions where $1 \le a,b,c,d \in \mathbb{Z} \le 1000$ and $a \ne b \ne c \ne d$?

 4 How do you factor $x^3-3x^2-4x+12$ 0 How do I solve $x^4-3x^2+2=0$?

### Tags (79)

 4 algebra-precalculus × 15 0 complex-analysis × 7 0 multivariable-calculus × 13 0 sequences-and-series × 6 0 calculus × 9 0 integration × 5 0 real-analysis × 7 0 limits × 5 0 probability × 7 0 convergence-divergence × 5