Question

What is Z+ in math?Why is math so hard?​

Answer 1

Answer:

The symbol ℤ can be annotated to denote various sets, with varying usage amongst different authors: ℤ+, ℤ+ or ℤ> for the positive integers, ℤ0+ or ℤ≥ for non-negative integers, and ℤ≠ for non-zero integers. Some authors use ℤ* for non-zero integers, while others use it for non-negative integers, or for {–1, 1}.

bruhhh..its not tht hard ....anywayzz...here's the reason

Math seems difficult because it takes time and energy. Many people don't experience sufficient time to "get" math lessons, and they fall behind as the teacher moves on. Many move on to study more complex concepts with a shaky foundation. We often end up with a weak structure that is doomed to collapse at some point.