Mercy
Reputation
Top tag
Next privilege 10,000 Rep.
Access moderator tools
 18h answered How do i evaluate the following integral? 23h answered How would I prove this strange combinatorial identity? 1d revised sum of a telescoping series added 7 characters in body 1d answered sum of a telescoping series 1d comment Identifying compositions of reflections, and rotations in a hexagon @Mark You were right, I just fixed it. 1d revised Identifying compositions of reflections, and rotations in a hexagon deleted 112 characters in body 2d comment Prove that $\int_0^1\int_x^1 \frac{f(y)}ydy\,dx=\int_0^1f(x)\,dx$ if $f$ is Lebesgue integrable Is $g$ even differentiable? Apr22 comment $R^2$ a subspace of $R^3$ $\mathbb{R}^2$ is NOT a subspace of $\mathbb{R}^3$, but isomorphic to any $2$-dimensional subspace of $\mathbb{R}^3$, e.g. $\mathbb{R}^2\simeq \mathbb{R}^2\times0 \subset \mathbb{R}^3$. Apr22 answered Identifying compositions of reflections, and rotations in a hexagon Apr22 comment Translation or rotation? Identify $R_{C,-120} \circ R_{B,-60} \circ R_{A,-180}$ @Mark You might also want to check this math.stackexchange.com/questions/1225042/… Apr22 comment Translation or rotation? Identify $R_{C,-120} \circ R_{B,-60} \circ R_{A,-180}$ @Mark With that picture of your $\angle(\Delta_1,\Delta_2)=60$ and therefore $S_{\Delta_2}\circ S_{\Delta_1}$ is equal to $R_{C,120}$ not $R_{C,-120}$. The only line containing $C$ and satisfying $\angle(\Delta_1,\Delta_2)=-60$ is the line through the point $A_1=S_{\Delta_1}(A)$. Apr22 comment Translation or rotation? Identify $R_{C,-120} \circ R_{B,-60} \circ R_{A,-180}$ @Mark Make sure your triangle is oriented clockwise. Apr21 answered Translation or rotation? Identify $R_{C,-120} \circ R_{B,-60} \circ R_{A,-180}$ Apr20 answered Integrate $\frac{1}{1+\cos^2x}$. Probably need using some trigonometric identity I don't know Apr20 answered Evaluating a complex integral (Hints please) Apr20 answered $\lim_{n\rightarrow \infty}(3^n+7^n)^{1/n}$ Apr20 answered Expanding a function Apr20 answered Continuity of metric function Apr20 comment Conditions for Laplace Transform $$\mathscr{L}(1) (s)=\frac1s$$ Apr20 revised Binomial theorem, verify ${\frac12 \choose n+1} = 1/(n+1){n-\frac12 \choose n}(-1)^n(1/2)$ added 16 characters in body; edited title