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As everyone providing assistance here knows, I am neither a student in a class nor doing homework. This came up in a project I am working on, and I cannot figure out whether there is no answer or whether I am missing something obvious. P(X)= \text {a known positive value } a < 1;\\ P(Y) = \text...

Over at Math Help Forum, there is a neat little problem Without using a calculator, computer, book of math tables, slide rule, or brute force, determine which is smaller 15^{11} or 7^{17}.

For the past two weeks, I was unable to post. Obviously the problem, whatever it was, is now gone, for which I am grateful. I had, however, no clue how to communicate the problem. Is there an email address for reporting connection problems?

Notice that I anticipated your objection, but “there is not a limit as n approaches infinity there” either. As usual, you missed the point. The notation is incorrect.

I was asked a question by private message. I have figured out this much of an answer. Answering the question involves solving a system of n + 1 linear equations subject to constraints. c > 0, \ 1 \le j \le n + 1 \implies 0 \le a_j, 1 < p_j, \text {and } \\ \displaystyle a_jp_j = c +...

Yesterday I was working on answering a question about logarithmic differentiation and came across something I had not noticed before. I did not know if I had made a mistake or if it was a coincidence, but it stopped me from posting an answer. y = a^n, \text { where n is an integer and} a is a...

Is there a way in LaTeX to build a table

This has grown out of a student's problem and relates to a question raised by jomo. I do not, or at least not yet, have an answer for it. Consider the family of functions such that if f(x) belongs to the family f(x) is a polynomial of even degree with real coefficients; f(x) has real zeroes...

This is probably basic stuff in some not very advanced branch of mathematics, and once I have some vocabulary, I shall probably have further questions, but I do not even know what topic I have stumbled into. To start, I have a system of n functions y_j = f_j(x_1,\ ... x_n),\ \text { where } n...

I am having trouble getting LaTeX to work on my tablet. My issue or bigger than just me!

I am presuming that by "k is first" you mean k is the smallest integer in T and that H = \lfloor \sqrt{P} \rfloor \implies H \in \mathbb Z^+. If those guesses are wrong, I do not get the proof. If they are correct, it's a very nice proof.

You can't prove it because it is obviously false. Your professor is an idiot.

Suddenly, the math tags do not seem to be rendering my LaTeX code.

With the new software, what are the delimiters for LaTeX. I cannot get the old tex and /tex pair to work. Also, where can you change font size?

And Jomo hates to agree with Jeff, almost as much as he hates agreeing with Denis.

Merry Christmas to all.

I have tried to find (so as to fix) the apparent error in my LaTeX code at this answer. https://www.freemathhelp.com/forum/threads/112841-Proof-by-mathematical-induction-problem-solving?p=437137#post437137 I am mystified (as usual).

I decided to take my own advice in this thread: https://www.freemathhelp.com/forum/threads/111975-Degrees-of-Freedom The only way to understand math is to actually do the math. So, before I even posted in that prior thread, I constructed a small numerical example, which took me one step beyond...

I hope that this question will not be thought captious or obscurantist. My math education was a bit hit or miss because my academic field was history. My sole knowledge of linear algebra comes from courses I took in abstract algebra and in numerical methods. What I gathered from that is that...

Some of my posts are being deleted soon after being posted. I do not know why. I have sent private messages to Mark about this problem, but maybe they are being deleted too.