1. Let's clarify what "infinite" means in mathematics. It usually refers to a value that grows without bound or does not have a finite limit. 2. A common reason for something to be infinite is division by zero. For example, the expression $\frac{1}{0}$ is undefined and often described as infinite because as the denominator approaches zero, the value grows without bound. 3. Another case is limits in calculus where a function approaches infinity as the input approaches a certain value. 4. To understand why a specific expression or function is infinite, we need to analyze its behavior, especially near points where it might be undefined or unbounded. 5. If you provide the exact expression or context, I can explain precisely why it is infinite.