I'm able to use a $z$-table, but would like to be able to use my ti-$83+$ to get value. For example, $P(z \leq 2.5) = 0.9938$ , given $2.5$ I would l...

Is there a name for the mathematical rule/axiom/property $x/x = 1?$ What are the conditions for it to apply? For instance, the rule does not apply where $...

Just ran into "algebraic proof" that 2x2=5 on youtube. They didn't hide that it was a trick. Can't find where is the mistake. Let a=4,...

While studying Ramanujan's Collected Papers I came across a paper titled "Some Definite Integrals" which appeared in Messenger of Mathemati...

For each angle $\theta \in \mathbb{R}$, we get two corresponding matrices: $$\mathrm{Rot}^\theta = \begin{bmatrix} \cos \theta & -\sin \theta \\ \sin ...

I've seen this but never knew what it does. Can any one let me in on the details? Thanks.

Kindly help me understand this statement made by my prof. "The identity matrix I has the property that any non zero vector V is an eigenvector of eigenval...

The problem gives me a list of values for $f(x)$ and $f'(x)$. I tried solving the problem using integration by parts, allowing $u=\sin(2x), u'=2...

It is well known that a graph is said to be $k$-partite if its vertex set can be partitioned in to k non empty sets such that no two vertices in the same ...

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