- Is there an easy way to find a subgroup of order 4 in D12 (dihedral group of order 12)?

Discover Questions

A water supply reservoir has leakage, which kind of glue is effective for it? Prove that A is dense in X iff A closure equals X. A subset X.? Which better: AUTOCAD 3D or AUTODESK INVENTOR ?
For design/ drawing: pipeline, baseline/ metal frame, and pumps..? Why does do the ancient cities of Harappa and Mohenjo daro register like 15 RAD in some places? Have you ever heard about this? How do I use de Moivre's formula to evaluate (cos pi/7 + i sin pi/7) ^7 in cartesian form?