Alpha
Reputation
500
Top tag
Next privilege 1,000 Rep.
Create new tags
 Nov 30 revised Find all the triangles satisfying $\cos(A)\cos(B)+\sin(A)\sin(B)\sin(C)=1$ spelling correction; Nov 30 comment conversion of $\cos \theta$ = 0.248 without a calculator You might be forgetting that external users also browse this site and search for the questions. It really doesn't matter how old the question is, people will still find it. Nov 30 comment Let $f_n(x)=nx(1-x^2)^n$ on $[0,1]$ for $n\ge1$. Find $f(x)= \lim f_n(x)$. Is this a convergence uniform? Question needs some serious mathjax edit. This is really ambiguous to even edit. Nov 30 comment conversion of $\cos \theta$ = 0.248 without a calculator @Integrator It was just to maintain the quality of question. I hope you won't mind that. Nov 30 revised conversion of $\cos \theta$ = 0.248 without a calculator changed 1.0471 -> 0.248 (as suggested by the user in the comment); 1.0471 not lie in the range of cos function (and user has just stated this numeral as an example so it's appropriate to change it to some suitable value) Nov 30 suggested approved edit on Find all the triangles satisfying $\cos(A)\cos(B)+\sin(A)\sin(B)\sin(C)=1$ Nov 30 suggested approved edit on conversion of $\cos \theta$ = 0.248 without a calculator Nov 30 revised Suppose that the area bounded by the curve $y = 3x^2 − 12x + 9$, the x-axis and the lines $x = 1$ and $x = k$ is 16. Find $k$. mathjax added; changed x=-1 to x=1 (as commented by the asker) Nov 30 comment Suppose that the area bounded by the curve $y = 3x^2 − 12x + 9$, the x-axis and the lines $x = 1$ and $x = k$ is 16. Find $k$. Check the graph. This might help you. desmos.com/calculator/xrghc65aox . Quadratic function is passing through $x$-axis from $x=1$ and $x=3$. You'll have to break the limits accordingly. Nov 30 suggested approved edit on Suppose that the area bounded by the curve $y = 3x^2 − 12x + 9$, the x-axis and the lines $x = 1$ and $x = k$ is 16. Find $k$. Nov 30 suggested rejected edit on Suppose that the area bounded by the curve $y = 3x^2 − 12x + 9$, the x-axis and the lines $x = 1$ and $x = k$ is 16. Find $k$. Nov 30 revised Arithmetic Progression Problem deleted 1 character in body Nov 22 revised Arithmetic Progression Problem deleted 40 characters in body Nov 22 awarded Notable Question Nov 21 revised $\lim_{x \to \infty} x\sin(\frac{1}{x}) = 1$ (epsilon-delta like condition) Title edited; \text{sin}{...} -> \sin{...} Nov 21 revised Expectation of the derivative of a random process Mathjax added. Nov 21 revised Using Fourier analysis to show a function is positive Mathjax fixes; Images on web page affects it's loading time Nov 21 revised Probability that one of a set of four points lies within the triangle formed by the other three Mathematical expressions rectified Nov 21 comment $\lim_{x \to \infty} x\sin(\frac{1}{x}) = 1$ (epsilon-delta like condition) Hint: Take another variable $t$ such that $t=\frac{1}{x}$ and change the limit. After that apply the $\sin{x}$ expansion. Nov 21 suggested approved edit on $\lim_{x \to \infty} x\sin(\frac{1}{x}) = 1$ (epsilon-delta like condition)