Mathematics
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Franklin Pezzuti Dyer
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567 Answers

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6
Find the sum of the first $75$ terms of the arithmetic sequence that starts $5, 8, 11, \ldots$
Jul 12 '17 at 23:02
6
How to recognize a sum as a Riemann Sum
Jul 5 '17 at 17:30
6
What is the difference between equality and congruence outside of geometry?
Jun 24 '17 at 18:43
6
Function question $f(x+1)$ and $f(x)$
Jun 17 '17 at 16:22
6
Help with simplification question: $\frac{x}{x-1} - \frac{x}{x+1}$
May 29 '17 at 19:25
6
Does the sum of three vectors originating from the centroid of a triangle and pointing to the angles always sum to zero?
May 4 '17 at 21:06
6
How to explain this relation between surface area and 1st derivative of volume(circle, sphere, square and cube)?
Apr 30 '17 at 22:54
5
Nice integral $\Im\Big(\int_{0}^{1}\ln\Big(\arctan\Big(\frac{x^2-x-1}{x^2+x+1}\Big)\Big)dx\Big)=\pi$
Apr 15 '20 at 13:44
5
How to compute $S$?
Oct 17 '19 at 20:57
5
How many solutions are there for $x_1+x_2+x_3=50$, with the restriction that none of the $x_s$ can be greater than or equal to $20$?
Dec 14 '18 at 23:25
5
Find a matrix B such that $B^5 = A$
Dec 5 '18 at 21:36
5
A nice relationship between $\zeta$, $\pi$ and $e$
Dec 1 '18 at 19:11
5
Lattice Paths that Avoid a Point
Nov 30 '18 at 21:09
5
Value of $\prod_{n=2}^{\infty} \frac{n^2+1}{n^2-1}$
Nov 19 '18 at 20:20
5
Why are partitions and equivalence relations the same thing?
Nov 10 '18 at 17:14
5
Determine $f$ when $f(t)+f(t^{-1}) = g(t+t^{-1})$
Jul 27 '18 at 19:05
5
Compute $\sum_{n=1}^\infty n^{-6}$ using $\sum_{k=0}^\infty (2k+1)^{-6} = \frac{\pi^6}{960}$
Jun 23 '18 at 21:36
5
When differentiating the logarithm, log(x), to get 1/x, does the choice of base matter?
Nov 2 '17 at 23:11
5
Surprising identities / equations
Oct 7 '17 at 15:53
5
Are the reals $\mathbb{R}$ a subset of $\mathbb{R}^2$?
Oct 6 '17 at 23:21
5
solving exponential equation $e^{x/n}=x$
Oct 5 '17 at 23:07
5
Convergence of complex series $\sum_{n=1}^{\infty}\frac{i^n}{n}$
Sep 23 '17 at 17:36
5
If $A\cup B = U$ and $A\cap B = \emptyset$ then $B = A^c$ — contradiction?
Jul 26 '17 at 13:08
5
How to prove $\{ pn:n\in\mathbb{N} \} \cap \{ qn:n\in\mathbb{N} \} \ne \emptyset $ formally?
Jul 13 '17 at 23:34
5
Differentiate functions
Jul 5 '17 at 14:30
5
How to find the nth term of quadratic sequences
Jul 3 '17 at 16:39
5
How is $\ln$ pronounced by English speakers?
Jun 27 '17 at 18:58
5
Find a combinatorial proof to 10!=7!6!
Jun 15 '17 at 18:10
5
How to learn a great number of theorems by heart?
Jun 9 '17 at 22:32
5
Need help in evaluating $\int_{-1}^1 (1-x^2)^k, k \in \mathbb{N}$
May 31 '17 at 22:01
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