Precalculus 1: Basic notions - Mathematics from high school to university
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Description
Precalculus 1: Basic notions
Mathematics from high school to university
S1. Introduction to the course
You will learn: about this course: its content and the optimal way of studying.
S2. Magical letters and symbols
You will learn: Greek and Latin letters and their usage in mathematics; mathematical symbols you will learn during this course.
S3. Numbers and arithmetic
You will learn: about different kinds of numbers (natural numbers, integers, rational numbers, irrational numbers, real numbers) and their arithmetic.
S4. Absolute value and distances
You will learn: Cartesian coordinate system: the axes, the unit, the origin, the coordinates of points, coordinates after reflections about the axes and the origin; absolute value as the distance from a real number to zero; absolute value for measuring distances; distances in abstract metric spaces.
S5. Equations and inequalities
You will learn: different ways of looking at equations and inequalities (as something to be solved, or as something what describes certain sets), with focus on linear equations and inequalities containing absolute value. Solution sets as subsets of R or R^2.
S6. Functions
You will learn: about functions: various ways of defining functions; domain, range, graph; x- and y-intercepts; surjections, injections, bijections, inverse functions; increasing and decreasing (monotone) functions; bounded functions; arithmetic operations on functions; compositions of functions; odd and even functions; transformations of graphs.
S7. Logic
You will learn: the meaning of the symbols used in logic; conjunction, disjunction, implication, equivalence, negation; basic rules of logic (tautologies) and how to prove them; two kinds of quantifiers: existential and universal; necessary and sufficient conditions.
S8. Sets
You will learn: the basic terms and formulas from the Set Theory and the link to Logic; union, intersection, set difference, subset, complement; cardinality of a set; Inclusion-exclusion principle.
S9. Relations
You will learn: about binary relations generally, and specifically about RST (Reflexive-Symmetric-Transitive) relations, equivalence classes, and about order (partial order) relations.
S10. Functions as relations
You will learn: definition of a function as relation between sets: domain and co-domain; injections, surjections, bijections, inverse functions.
S11. Axioms, definitions, theorems, and proofs
You will learn: the meaning of words axiom, definition, theorem, lemma, proposition, corollary, proof; Various types of proofs with some examples: direct proof, proof by induction, indirect proof, proof by contradiction.
S12. Sequences and series; AP, GP, HP
You will learn: how to use the symbols Sigma and Pi; you will also get an introduction to sequences and series, with some examples; arithmetic, geometric, and harmonic progressions.
Make sure that you check with your professor what parts of the course you will need for your final exam. Such things vary from country to country, from university to university, and they can even vary from year to year at the same university.
A detailed description of the content of the course, with all the 237 videos and their titles, and with the texts of all the 236 problems solved during this course, is presented in the resource file
“001 List_of_all_Videos_and_Problems_Precalculus_1.pdf”
under video 1 ("Introduction to the course"). This content is also presented in video 1.
Who this course is for:
- Students who plan to study Calculus, Real Analysis, Discrete Mathematics or Abstract Algebra
- High school students curious about university mathematics; the course is intended for purchase by adults for these students
- Everybody who wants to brush up their high school maths and gain a deeper understanding of the subject
- College and university students studying advanced courses, who want to understand all the details they might have missed in their earlier education
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