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Derek Owens
Приєднався 15 лис 2006
This channel features educational videos, mostly math and physics, from the online classes available at www.DerekOwens.com.
Derek Owens teaches homeschool students in the Atlanta area and also offers online classes. He currently enrolls hundreds of students in nearly all of the 50 states in the US and in over a dozen foreign countries.
Derek Owens teaches homeschool students in the Atlanta area and also offers online classes. He currently enrolls hundreds of students in nearly all of the 50 states in the US and in over a dozen foreign countries.
Geometry - Exam 2 Review Problem 14-06
Geometry second semester exam review.
A circle fits inside an isosceles trapezoid as shown. Find the area of the shaded region.
A circle fits inside an isosceles trapezoid as shown. Find the area of the shaded region.
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Відео
Geometry - Exam 2 Review Problem 12-11
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Geometry second semester exam review problem. Circle C is inscribed in triangle PQR as shown. PR = 1.8 QR = 2.4 PQ = 3.0 a) Is PQR a right triangle? b) What type of shape is FCER? How do you know? c) Find the radius of the circle.
Algebra 2 7.4p4 - Practice Problems 5 - 6
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f(x) = e^(1.4x - 2). Find the inverse of function f. f(x) = 3e^(5x) 1. Find the inverses of function f.
Algebra 2 7.4p3 - Practice Problems 3 - 4
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f(x) = 3 log_4(x). Find the inverse of function f. f(x) = ln(x 7) / 2. Find the inverse of function f
AP Calculus AB Practice Exam Multiple Choice Problem 80
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AP Calculus AB Practice Exam Multiple Choice Problem 80 The acceleration of a particle moving along the x-axis is given by a(t) = ln(3^t 2). At time t=2, the velocity of the particle is 2. What is the velocity at time t=3?
AP Calculus AB Practice Exam Multiple Choice Problem 79
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AP Calculus AB Practice Exam Multiple Choice Problem 79 Which of these graphs could be a graph of function f such that the given expression evaluates to 2.
Calculus 6.08m - Examples 16 - 17
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Two more examples of limits that can be evaluated using L'Hopital's Rule
Calculus 6.08l - Examples 13 - 15
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L'Hopital's Rule. Three examples of limits that can be evaluated using L'Hopital's Rule.
Calculus 6.08k - Limit of 1+1 over x to the x
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Using L'Hopital's Rule to evaluation the limit of 1 1/x to the power or x, and some comments on the familiar final result.
Calculus 1.2f - Derivative from Given Data
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Approximating a derivative given a table of values. The rate of change of a function at a given point can be approximated from given data points even if the equation of the curve is not known.
Calculus 1.2e - Derivative from an Equation
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Approximating the rate of change at a point when given the equation for a graph. An approximation is done using a forward difference quotient, and the advantages of using a small interval and a symmetric difference quotient are discussed.
Calculus 1.2d - Derivative from a Graph
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Using a tangent line on a graph to estimate a derivative. Using a graph of position vs. time, the average velocity and the instantaneous velocity are both considered. The technique of finding the slope from a tangent line is demonstrated.
Calculus 1.2c - Average and Instantaneous Velocity
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The concepts of average velocity and instantaneous velocity are explained and are used to introduce the concept of the derivative at a point.
Calculus 1.2b - Interpreting a Graph
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Interpreting a graph of position vs. time, and using the graph to answer questions about rate of change
Calculus 1.2a - Position and Velocity
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The beginning of the introduction to derivatives, using the example of position and velocity. These concepts of motion were some of the questions that originally motivated Isaac Newton to formulate the theory of derivatives. Position and velocity are discussed graphically and the slope calculation is shown.
Calculus 1.1d - The word `Calculus`
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Calculus 1.1d - The word `Calculus`
Calculus 1.1c - Lengths, Areas, Volumes, and Rockets
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Calculus 1.1c - Lengths, Areas, Volumes, and Rockets
Calculus 1.1b - Tangents and Max Min Problems
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Calculus 1.1b - Tangents and Max Min Problems
Calculus 1.1a - Early History and New Problems
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Calculus 1.1a - Early History and New Problems
Algebra 1 12.6p2 - Practice Problem 2
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Algebra 1 12.6p2 - Practice Problem 2
Algebra 1 12.6p1 - Practice Problem 1
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Algebra 1 12.6p1 - Practice Problem 1
Physical Science 4.4b - Multiplying Force
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Physical Science 4.4b - Multiplying Force
Physical Science 4.4a - The Wheel and Axle
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Physical Science 4.4a - The Wheel and Axle
Calculus 6.08j - Example 12 Limit of x to the x
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Calculus 6.08j - Example 12 Limit of x to the x
Calculus 6.08i - The Indeterminate Form Infinity over Infinity
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Calculus 6.08i - The Indeterminate Form Infinity over Infinity
Calculus 6.08f - The Small Angle Theorem
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Calculus 6.08f - The Small Angle Theorem
Calculus 6.08e - Limits that Evaluate to Zero or Infinity
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Calculus 6.08e - Limits that Evaluate to Zero or Infinity
Calculus 6.08d - Repeated Application of l`Hopital`s Rule
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Calculus 6.08d - Repeated Application of l`Hopital`s Rule
So we can presume, the energy emitted at a higher level is bigger than the energy when absorbed. So different wavelengths?
Mitochondriac Manifesto brought me here. Very interesting and informative video, thank you!
when iron heated so the size of atom increases...?
It's not the size of the atom that increases but the *motion* of the atoms. At the atom level, heat is basically the vibration of the atoms. When the iron is heated, they shake back and forth more than when it is cool. And this extra movement requires more space, so the material has to expand.
@@derekowens ...so the electron cloud size in increased...? means the track on which the electron is moving so the distance between tracks increases is it...?
@@i-m-alien I don't think it's the electron cloud increasing in size as it is the atom as a whole moving around. Think about a bunch of people lined up sitting on a bench, sitting very close together, right against each other. If they start squirming, they will need more space. The people themselves don't get any bigger, but they require more room because of the additional motion. The squirming will tend to spread them out.
@@derekowens ...ok means occilating the bangle kept on table , where the size of bangle will not change
@@i-m-alien Yes, I believe that is the right idea. I'm just a high school physics teacher, though. If an actual physicist wants to read this and offer a more authoritative explanation that would be great.
What a great explanation! Sometimes a graphical demonstration like this, although not a rigorous proof to the academic standard, is sufficient for the student to "see" why some rule works. I had a similar problem when shown Descartes' Rule of Signs, but with no proof offered. When I tried to find a proof of Descartes' Rule, the offerings were too advanced for me. Eventually, I reasoned out a graphical justification for Descartes' Rule myself, and that was sufficient to put me "at peace" with the rule and move on.
Could anyone kindly tell me what textbook the prof is using it? Thanks for the your prompt answer
It's not a textbook, but rather a student workbook that is designed to go along with the videos. Students take notes and solve the problems in the workbook as they watch the lectures. This particular workbook is here: www.lulu.com/shop/derek-owens/calculus-semester-1-student-workbook/paperback/product-1qz4dyeq.html?q=Derek+Owens+Workbook&page=1&pageSize=4
Thanks prof for your help, and kindly continue your contribution for the global student.
Holy crap, how can this video be 14 years old?
شكندير هنا🙂
amazing explanation! tysm
Me seeing it after 14 years 😅
Learned about this rule in my Ap Calc AB class a few months ago. I asked the teacher where it came from and why it works and she said to just use it and she didn’t fully know. Thanks for teaching me! I find calculus very fascinating to learn and it’s people like you who make the world a better place. Consider becoming a teacher, you are very skilled!
Starting this video: "how the hell does l'hospital actually work?" Exiting: "yeah, that makes sense." Thanks🎉
Thank you job well done ✅
Youre the best . Thank you so much.
Thanks. I really need these solutions 😅
Sin(-90)=?
SIne of negative 90 degrees is -1. Negative 90 degrees puts you down at the very bottom of the unit circle, at the point (0, -1). And the sine of the angle is the y value.
Good.
Thanks for your videos.
👍
2024 Anyone?
👍
👍
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Outstanding tutorial 👌 👏 👍
Thank you its brilliant
Beautiful explanation. Thanks a lot.
Jupiter’s Great Red Spot, www.nasa.gov/image-detail/47462090512-65ac1cde76-o/ via the #NASA_App
Thank you so much now I understand and will ace my test tomorrow 🔥
So i answered by 1 in an exam yesterday.. Cuz the first form it's looked definite to me .?😢
Well explained
Ur the best
Watching in 2024❤
What app did you use as your calculator sir?
I usually use an emulator program called VTI. I would love to find a similar app for the TI-84 Plus CE.
What you call "visible" light is only based upon your inability to receive the full spectrum and is by no means the standard for all other Energies.
I have a question why did it come up with 9.8m/s*2
That's the acceleration due to gravity near earth's surface. That number shows up a lot in basic physics problems.
What happens when the zero ends up with on of the variable spots instead of the very end?
I acepted you more bro!!!!
how did find the 2-1 ??
erastothenes measured the distances to all koines in illyricum. He was a scholar of ilyro-helenic origin living in egypt
Just awesome.
I have a question. So atoms just have unlimited photons that they can emit every time energy is applied to them?
I'll try to help. It's not that they have photons that they release. The atoms absorb photons and then re-emit them. And that can happen essentially an unlimited number of times. When they absorb energy, that takes the form of an electron being kicked up to a higher energy level. When the electron then drops down to a lower energy level then that energy is emitted in the form of a photon.
In Holland we have big educational math problems. Your math-way is Beautiful! Is the 'popping' sound your voice as well? I love it, but i can't make that sound yet... but practicing already!
It's very helpful, thankyou for the video
This good study for eta cet?
thanks but where is the video you explained how to the square root of complex numbers?
Anyone from 2024 here😅
If they don't they ask you to find the distance and they give the masses and the charges of the two particles what do you do about that ?
I think it would depend on what they *are* asking for. What is that they are asking you to find in this case?
Thank you
This saved my life!
Nice
Thanks GOD BLESS YOU