Pre - calculus and its functions

Introduction to Pre-Calculus
Studying Pre-Calculus, an advanced form of secondary school algebra is a foundational mathematical discipline. It is also called Introduction to Analysis. In many schools, studying pre-calculus is actually two separate courses: Algebra and Trigonometry. Pre-calculus does not prepare students for calculus as pre-algebra prepares students for Algebra I. While pre-algebra teaches students many different fundamental algebra topics, pre-calculus does not involve calculus, but explores topics that will be applied in calculus. Some pre-calculus courses might differ with others in terms of content.
The major functions can be explained as

1. Trigonometric Functions
2. Polynomial Functions
3. Logarithmic and Exponential Functions

Studying Pre-calculus is essentially the study of functions, which concern us first with learning about general functions, and later with certain types of common functions with special properties, like polynomial, exponential, logarithmic, and trigonometric functions