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Pre Calculus from Themathpage

The formal rules of algebra

Rational and irrational numbers

What is a rational number? Which numbers have rational square roots? The decimal representation of irrationals. What is a real number?

Functions

What is a function? Functional notation. A function of a function.

Introduction to graphs

The graph of a function. Coördinate pairs of a function. The height of the curve at x.

Basic graphs

The constant function. The identity function. The absolute value function. A parabola. The square root function. The cubic function.

The vocabulary of polynomial functions

Definition of a polynomial in x. The degree of a term and of a polynomial. The leading coefficient. The general form of a polynomial.

The roots, or zeros, of a polynomial

The polynomial equation. The roots of a polynomial. The x- and y-intercepts of a graph. The relationship between the roots and the x-intercepts.

The slope of a straight line

Definition of the slope. Positive and negative slope. A straight line has only one slope.
"Same slope" and "parallel." Perpendicular lines.
The slope and one point specify a straight line.

Linear functions: The equation of a straight line

The equation of the first degree. The graph of a first degree equation -- a straight line. The slope-intercept form, and its proof.

Quadratics: Polynomials of the second degree

Solving a quadratic equation by factoring. A double root. Quadratic inequalities. The sum and product of the roots.

Completing the square

Solving a quadratic equation by completing the square. The quadratic formula.

Synthetic division by xa

The remainder theorem.

Roots of polynomials of degree greater than 2

The factor theorem. The fundamental theorem of algebra. The integer root theorem. Conjugate pairs.

Multiple roots. Point of inflection.

Concave upward, concave downward.

Reflections of a graph

Reflection about the x-axis. Reflection about the y-axis. Reflection through the origin.

Symmetry of a graph

Symmetry with respect to the y-axis. Symmetry with respect to the origin. Test for symmetry. Odd and even functions.

Translations of a graph

Definition of a translation. The equation of a circle.
The vertex of a parabola. Vertical stretches and shrinks.

Rational functions

Singularities. The reciprocal function. Horizontal and vertical asymptotes.


Inverse functions

Definition of inverses. Constructing the inverse.
The graph of an inverse function.

Logarithms

The system of common logarithms. The system of natural logarithms. The three laws of logarithms.

Logarithmic and exponential functions


Factorials

Permutations and Combinations

The Fundamental Principle of Counting. Factorial representations.

The binomial theorem

Pascal's triangle.

Multiplication of sums

A proof of the binomial theorem.

Mathematical induction

TOPIC IN TRIGONOMETRY from Themathpage


Ratio and Proportion. Similar Triangles

Radicals: Rational and Irrational

Numbers

The Pythagorean Theorem

Definitions of the Trigonometric

Functions of an Acute Angle

Trigonometry of Right Triangles

Similar figures. All functions from one function. Complements. Cofunctions.

The Isosceles Right Triangle

Solving Right Triangles

The Law of Sines

The Law of Cosines

The Circle

The definition of π. The remarkable π/4.

Evaluating π

The ratio of a chord to the diameter.
The area of a circle.

Measurement of Angles

Standard position. Degree measure.
The four quadrants. Coterminal angles.

Radian Measure

Radians into degrees. Degrees into radians. Coterminal angles. The multiples of π.

Arc Length

The definition of radian measure. s = rθ.

Analytic Trigonometry: The Unit Circle

The analytic definition of the trigonometric functions.
The signs in each quadrant.
Quadrantal angles.

Trigonometric Functions of Any Angle

The corresponding acute angle.
cos (−θ) and sin (−θ). Polar coordinates.

Line Values

Graphs of the trigonometric functions

The zeros of sin θ. The period of a function.

Inverse trigonometric functions

Trigonometric identities

Three-place Trigonometric Table

Some Theorems of Plane Geometry



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lesson Negation


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Conditional Probability

Challenge exercise(probability)

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