The following problem is from the 7th edition of the book "Calculus and Analytic Geometry Part II". It can be found in section 13.7. It is problem number ...

I have a circle who center $(0, 0)$ and radius $100$ are known. That circle is divided into $6$ equal parts. I want to know the coordinates of all six poi...

I am confused on the usage of the word "interpretation" and/or "model" when it comes to propositional logic versus first-order logic because there are so ...

What is the actual definition of Left Hand Derivative? I bumped into this site and the second white box on their site gives the definition. Is that wrong?...

I am having some trouble with this. I can see that the last two are true by testing them with a few functions, but I don't know how to prove them. Al...

Why is it that All right angles are equal to each other -a postulate in Euclid's Elements (Wikipedia). Shouldn't it be a congruence rather than ...

I am given the equation: 5 * 3^x = 2 * 7^x The text book and everywhere online shows me how to do this when the variable is only on one side or when it ca...

I'm a non-mathematician who is self-studying mathematics. Although I'm very interested in mathematics, my main purpose is to apply math in theor...

John Lee says in "Riemannian Manifolds: An Introduction to Curvature": With some more sophisticated tools from algebraic topology, it can be shown that ev...

Suppose that you have a map $i: A\rightarrow X$ between CGWH (compactly generated weakly Hausdorff) spaces. It is true that if it is a cofibration in CGWH...