Math Notes

My personal collection of mathematics notes, examples, and explanations.

Note Entries

Polynomial End Behavior

Polynomial End Behavior

Predict the long-term behavior of polynomial functions without graphing:

  • Analyze leading coefficient and degree
  • Determine behavior as x approaches ±∞
  • Understand even vs. odd degree patterns
  • Interactive behavior predictor tool

Polynomial Graph Concepts

Polynomial Concepts

Core concepts for polynomial graphs and equations:

  • Finding intersection points
  • Solving factorable equations
  • Finding x-intercepts
  • Graph behavior & degree

Synthetic Division

Synthetic Division

Fast method for dividing polynomials by linear factors:

  • Quick polynomial division by $x - c$
  • Step-by-step coefficient operations
  • Find polynomial zeros and factors
  • Worked examples with practice problems

Polynomial Study Guide

Polynomial Study Guide

Comprehensive reference for all polynomial concepts:

  • Synthetic division and factoring methods
  • Finding roots and constant terms
  • Solving equations in factored form
  • End behavior and graphing techniques

Trigonometric Functions

Trigonometric Functions

In the unit circle, we can visualize the relationship between sine and cosine functions. For any angle θ:

  • sin(θ) represents the y-coordinate
  • cos(θ) represents the x-coordinate
  • The fundamental identity sin²(θ) + cos²(θ) = 1

SOH CAH TOA

SOH CAH TOA Trigonometric Mnemonic

SOH CAH TOA is a mnemonic device to remember the trigonometric ratios for right triangles:

  • SOH: Sine = Opposite / Hypotenuse
  • CAH: Cosine = Adjacent / Hypotenuse
  • TOA: Tangent = Opposite / Adjacent

Area of Triangles

Triangle Area Calculation

Learn different methods to calculate the area of triangles, including:

  • Standard formula: A = ½ × base × height
  • Area of right-angled triangles
  • Area of equilateral triangles
  • Heron's formula for any triangle

Solids of Rotation

Solids of Rotation

Learn how two-dimensional shapes can be rotated around an axis to create three-dimensional objects:

  • Understand the concept of solids of rotation
  • Explore common shapes like cylinders, cones
  • Learn volume formulas for various solids
  • See how calculus is applied

Geometric Dilations

Geometric Dilations

Master geometric transformations that change size while preserving shape:

  • Understand scale factors and centers of dilation
  • Calculate area changes with k² scaling
  • Determine scale factors from given areas
  • Apply dilations to solve real-world problems

Density and Volume

Density and Volume

Explore the fundamental relationship between mass, volume, and density:

  • Master the density formula: Density = Mass/Volume
  • Convert between different units (g/cm³, kg/m³)
  • Calculate any variable when given the other two
  • Apply density concepts to real-world problems

Volume Calculations

3D Volume Calculations

Calculate volumes of various three-dimensional geometric solids:

  • Cylinders: V = πr²h or V = B×h
  • Cones: V = (1/3)πr²h
  • Pyramids: V = (1/3)×BaseArea×h
  • Prisms: V = BaseArea×h