Question

Please answer

What is the name of ∆ this symbol.​

Answer 1

A (usually small) change in value. Often shown using the "delta symbol": Δ Example: Δx means "the change in the value of x" When we do simple counting the increment is 1, like this: 1,2,3,4,...

Answer 2

It is called delta symbol. A small change in value is shown as this symbol