 # Precalculus Resources

Best Resources Always

wolframalpha.com  It's an equation solver, a simplifier, a graphing calculator. It's everything

fooplot.com  A good graphing calculator online

Trig Flashcards- Good practice

(Unit 1)

Angular and Linear Velocity
torque applet- Bugs on a Record Player
worksheet

The Six Trig Functions

The Unit Circle (Unit 2)

Unit Circle In Radians- Geogebra Applet

Solving Right Triangles (Unit 3)

Lessons TheMathPage

Graphing Trig Fuctions (Unit 4)

Ron Blond Transformation Grapher AWESOME

Purplemath- Basics Tutorial

Understanding the Sine Graph - Geogebra Demo
Understanding the Tangent Graph- Geogebra Demo
Trig Word Problems- Geogebra Concepts   Hofstra Tutorial

Graph of the Sine- Goegebra Applet
Graph of the Cosine- Geogebra Applet
Graph of the Tangent- Geogebra Applet
Graph of the Cotangent- Geogebra Applet
Graph of the Secant- Geogebra Applet
Graph of the Cosecant- Geogera Applet

Biorhythms Intmath

Analytic Trigonometry (Unit 5)

Tutorials

Trig Identities
Giant List of Trig Identities- Wiki
Trig Cheat Sheet - GREAT!

Trig Identity Flashcards- Complex  but good

Evaluating Using Identities- Purplemath tutorial

Solving Oblique Triangles (Unit 6)
Textbook 7.2, 7.3, 7.4

Triangle Solver-   CHECK YOUR HW here. (don't cheat- show work)

Regents Prep- Law of Sines and Cosines Lesson

Law of Sines-

The Oblique Case Applet - from Ted Coe's Geogebra Applets

Sine Area Formula

Heron's Law

Graphing and Functions (Unit 7)

1.1 Rectangular Coordinates/Graphing Utilities
Objective 1: Use the Distance Formula- Khan
Objective 2: Use the Midpoint Formula - Khan

Using A Graphing Calculator

2.1 Functions

Linear Equations
2.2 Graphs of Functions

Functions Notation f(x)

2.3 Properties of Functions

Domain and Range

Symmetry- Even and Odd Functions

2.4  Line of Best Fit Linear Regression
Hofstra Regression Calculator
Illuminations
Alcula
EasyCalculation.com

Library of Functions

Absolute Value

Piecewise Functions

Transformation of Functions

Composite Functions

Inverse Functions

Systems of Equation Solver- Use to Find the Coeffecients a, b, and c given 3 points on a parabola

Quadratic Best Fit on a TI 84

Polynomial Functions and Roots

Don't forget Wolframalpha finds roots... Fooplot makes good graphs as does desmos

Polynomial Root Solver from SolvemyMath

Lesson- Solving Polynomials in Color

Multiple Roots/Multiplicity from The Math Page

Roots and Multiplicity

Polynomial Calculators from MATHPORTAL.org

Arithmetic Operations With Polynomials - This calculator performs arithmetic operations with polynomials i.e., addition, subtraction, multiplication and division.

Synthetic Division Calculator - Divide polynomials, Determine remainder, Check if \$x-c\$ is factor. .

Expand and Simplify Polynomials - This calculator will expand and simplify any polynomial. To see

Polynomial Roots Calculator - finds the roots of any polynomial.

Factoring Polynomials Calculator - This online calculator writes a polynomial as a product of linear factors.

Polynomial Generator from Roots - This calculator can generate polynomial from given roots.

Polynomial Graphing Calculator - With this calculator you can calculate and graph: the roots (x-intercepts), signs, Local Maxima and Minima, Increasing and Decreasing Intervals, Points of Inflection and Concave Up/Down intervals.

Purplemath Tutorial

Synthetic Division

Mathworld Explanation

Notes from The Math Page

Synthetic Division Calculator - With Kitties!

Rational Functions 3.3-3.5

Purplemath Tutorial

Rational Inequalities

Rational Inequalities- PurpleMath

Partial Fraction Decomposition 10.5
Heaviside Method

UNIT 9 EXPONENTIALS AND LOGS

Exponential Functions

Transformation of Exponential Functions

Logartihmic Functions

Exponential Applications

Compound Interest

Compound Interest Calculator

Compound Interest Simulator

WebMath Compount Interest Calculator

Khan Videos

Introduction to interest

Introduction to compound interest and e

The Rule of 72 Wikipedia

Exponential Regression

Logistic Regression

Logistic Regression

Deriving Exponential Equations From 2 Points

### Finding Exponential Equation from 2 points - YouTube

Mortgage Calculator.Net  - This site has a lot of cool online calculators including finding out which day your were born on. But you might be interested in the mortgage calculator itself. Thanks to Ms. Ashline's kids for pointing it out!

UNIT 10 PARAMETRICS AND POLARS

Spirograph- Wikipedia

Parametrics 9.7

50 FAMOUS CURVES- Inspiration for Parametric and Polar Art

CURVEBANK

Online Parametric Grapher

KHANACEDEMY VIDEOS
Projectile Motion
GAME: Project Trig

Projectile Launcher Applet

POLAR COORDIANTES AND GRAPHS

Polar Point Plotter

Polar Gallery- Desmos

KHANACDEMY VIDEOS

Polar Coordinates 1

Polar Coordinates 2

Polar Coordinates 3

David Little's Polar Grapher
- Excellent Applet Links Rectangular and Polar GRaphs

Unit 10 Vectors and DeMoivre's Theorems