Question: A quantum particle is inside a one-dimensional infinitely deep potential well.

Find the wavefunction that satisfies Schrödinger’s equation.

Question: Balance the chemical equation using Linear Algebra.

Question: Show that the sum of the cubes of any three consecutive integers is divisible by 9.

Question: Calculate the current and voltage difference between points D and B in the following circuit.

Question: Prove that the function has even values for all natural numbers ().

* Updated question for clarity.