The law of conservation of energy states that all energy in the universe is conserved. It can not be created nor destroyed, but it can be interchanged between mechanical and non-mechanical energy.
The Law of Conservation of Energy is best explained by Calculus, the first Derivative of Energy is zero. Energy is a Quaternion Concept consisting of a scalar (e) and a vector energy (E), E = [e,E]...
According to the law of conservation of energy,energy can only converted from one form to another; it can be neither be created nor destroyed total energy before and after transformation remains same