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Math-trig4.7: Exp and Log Functions and Models

Classnotes: 4.6 exp and log equations | 4.7 models Video Lessons 4.6 Exponential and Logarithmic Equations Solving exponential and logarithmic equations Solving Logarithmic Equations Solving Exponential Equations Using Logarithms Solving quadratic, absolute value, exponential, rational, radical, and logarithmic equations Video Lessons 4.7 Exponential and Logarithmic Models Logarithm Application: Magnitude of an Earthquake Exponential Decay App  […]

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Math-trig4.3-5: Logarithmic Functions

Classnotes: 4.3-4.4:| 4.5 Properties Video Lessons 4.3 Logarithmic Functions Introduction to Logarithms Evaluate Logarithms Without a Calculator – Whole Numbers Evaluate Logarithms Without a Calculator – Fractions Evaluate Common Logarithms on a Calculator Evaluate Common Logarithms Without a Calculator                                     Evaluate Natural Logarithms on the Calculator Properties of Logarithms Logarithms: Change of Base Formula Video Lessons 4.4 […]

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Math-trig4.1-2: Exponential Functions

Class Notes 4.1-2 Form (a, b; domain, range) Two parent graphs Transformations (a, b, asymptote) Exp fn vs Linear fn  (common ratio vs common difference) One-to-one property of exponentials finite and infinite/continuous growth rate (natural exp. Euler’s Number) Applications:  Bacteria growth Population growth Appreciation vs Depreciation (Cars, Houses) Compound Interest:  Trillion Dollar Equation Video Lessons […]

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Math-trig1.1: Functions

Video Lessons 1.1 Functions and Function Notation Introduction to Functions Domain & Range & Graphs Vertical & Horizontal Line Tests Evaluating functions using a Graphing Calculator Toolkit/Parent Functions Video Lessons 1.2 Domain and Range Domain and Range Interval & Set-Builder Notation Toolkit / Parent Functions & Domains  Piecewise Function:   Interpret & Graph Piecewise Function:  […]

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Math-trig1.5: Transformation of Functions

Parent functions The most inner function f(x) — coefficient of x is 1 3-5 points for easy calculation  f(2x+1) : consider 2x+1 –> x by (-1) , they by (1/2) Notes: corresponding  x (input) and y (output)  f(x) = f(2x+1) , smaller input x to make 2x+1 corresponding to x in f(x) Stacking the function […]

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Math-trig1.3: Average Rate of Change

A linear approximate divide and conquer change complex into simple things HOW: approximation which one is simpler: parabola or a line?  Can we study a line with infinite ends? — Line segment (between two points) — Domain and Range In reality, we don’t care about a thing if it does not change at all. We […]

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Math: 1st – 6th Grade

Three Key Topics in Elementary School Distributive property | Distributive Property | Review on Order of Operations and Distributive Property |  Practice-Distributive property | Factoring Fraction division and multiplication | Fraction division Proofs Negative numbers |  Drive these three concepts home with your children, then they are good to go for middle school.  Relate operations: addition […]

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Help Our American Kids with Their Math

因材施教 yin_1 cai_2 shi_1 jiao_4 Teachers and Parents, when teaching, ought as far as possible to teach students according to their abilities. – Confucius Dedicated to my dear daughter who made me re-learn math, view the stuff in a different perspective, made me realize that she has her own way to learn math, and made […]

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