New posts in Proof Writing

How does $\tan 70^\circ - \sec 10^\circ$ have the exact value of $\sqrt{3}$?

Clean and clever proofs to show every homomorphism of two groups with coprime orders is trivial?

How is AM-GM supposed to be used to prove an inequality

Is there an accepted strategy when tackling proofs involving inequalities?

Prove that $R$ is reflexive, symmetric, and transitive.

How to prove $\frac{a}{7a+b}+\frac{b}{7b+c}+\frac{c}{7c+a}\le\frac38$

Problem with induction proof in textbook.

Proving that a list of perfect square numbers is complete

Proving isomorphic groups have the same number of subgroups.

An approach to the derivative of $e^x$ in Calculus 1