Dr. Roger's Math Neighborhood

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I currently have over 1,100 SAT Math videos. Differential Equations - some videos have been posted, and more are coming soon. My background: - Founder of the...

Latest Videos

DigSAT Test1-1 #3 Writing inequalities

DigSAT 1-1 #.2 Rewriting equations

DigSAT Test1-1 #1 Fractions and percents

DiffEq Systems of linear ODE with unequal positive roots

DiffEq Systems of linear ODE with unequal positive roots

DiffEq Systems of linear ODE with unequal negative roots

DiffEq Systems - unequal roots with opposite sign 2

DiffEq Solving systems of linear ODE with unequal real roots

DiffEq Second Order Linear - repeated roots [Not SAT]

DiffEq Second Order Linear - complex roots [Not SAT]

DiffEq First Order - Homogeneous, Example 2 [Not SAT]

DiffEq First Order - Homogeneous Example 1 [Not SAT]

DiffEq First Order - Separable [NOT SAT]

DiffEq First Order - Linear - Example 2 [NOT SAT]

DiffEq First Order - Linear - Example 1 [NOT SAT]

Apr 2021 Fraction from bar graph #4-38

Apr 2021 Median from bar graph #4-37

Apr 2021 Radicals and rational exponents #4-36

Apr 2021 Percents #4-35

Apr 2021 System with no solution #4-34

Apr 2021 Percents #4-33

Apr 2021 Quadratic formula #4-32

Apr 2021 Bar graph asteroids #4-31

Apr 2021 Exponential decay #4-30

Apr 2021 Hawaii population linear #4-29

Apr 2021 Alaska population linear #4-28

Apr 2021 Intercepts of graph #4-27

Apr 2021 Graph of a line #4-26

Apr 2021 Interpret quadratic area #4-25

Apr 2021 Inequalities #4-24