Pre-cal prepare you for calculus. Calculus 1 begin with limit of a function, derivative rules, applications, anti-derivative. Calculus 2 begin with integral, applications, function of several variables...
To begin Calculus 1 we must know... a) Set of numbers classification b) Notation of interval
c) To solve inequality d) To solve equations, linear, quadratic and other. e) To know all types of functions, linear, quadratic, trigonometric, exponential, logarithm... about functions we must know how is the graph, the domain, the range, the roots, the inverse function, composite functions.
OK!