How do I get $x$ by itself in this equation? This is work related not school related. Thanks! $$x^2 +(tx)^2 = 1.333^2$$

Does the laplace transform of $1/t$ exist? If yes, how do we calculate it? Putting it in $$\int_0^\infty (e^{-st}/t) dt$$ won't solve. Is there any o...

I just derived this simple vector identity $$\mathbf{a}\cdot\left(\mathbf{b}\times\left(\mathbf{b} \times\mathbf{c}\right)\right) = \left(\mathbf{a}\times...

In the figure, $ABCD$ is a parallelogram. $E$ is the mid point of $AB$. $DF$ and $CF$ are intersected at $F$. Prove that $4\triangle AEF=Quadrilateral ABC...

This came up while I was doing some tutoring yesterday. Maybe it's simple, but it has been about 7 years since I last took geometry and I can't ...

There is the following parallelogram involving two shaded triangles. If I found rightly, angles of $AMD$, $BMN$ and $CDM$ are $45$. But I can’t go further.

I was revising some notes and found myself not understanding the Neumann boundary condition. I understand it analytically - it's $\frac{∂u}{∂x}|_{x=0...

I am looking for instructional videos for abstract algebra, specifically topics including group theory, ring theory, isomorphic and homomorphic structures...

I'm currently studying group theory and recently I've read about the first isomorphism theorem which can be stated as follows: Let $G$ and $H$ b...

I was trapped by this question at least for two hours. I negated the definition of limit first, and then try to prove $$\lim_{x \to 0}\cos\left(\frac1x\ri...