[Math] Mathematical Notation – Arrow Sign

Question

What does the $\Rightarrow$ arrow mean when showing working out in maths?

How do we use it appropriately?

Answer 1

The $\Rightarrow$ notation means that if the function on the left hand side of the notation is true, then so is the function on the right hand side of the notation.

So consider $X\Rightarrow Y$. This means that if $X$ is true, then $Y$ is also true.