New posts in Solution Verification

Is this proof of $\tan \frac{x}{2} = \frac{1-\cos x}{\sin x}$ incomplete?

$3^{123} \mod 100$

Calculating $\phi(100)$ where $\phi$ is the totient function

Prove that $p | a_i$ for some i

Number of permutations of $D,D,D,O,O,O,G,G,G$ such that no two $D$ are adjacent and no two $G$ are adjacent

Verification of a solution to a mathematical logic problem

Removable singularity and Liouville's Theorem

Prove there is no rational number r such that $2^r = 3$

Two methods are giving two different answers to the this differential equation : $\frac{dy}{dx}=\frac{1}{2} \frac{d(\sin ^{-1}(f(x))}{dx}$

Show that a transformation is linear if and only if its restriction to subspaces of dimension 2 is linear.