Identifying Conics Part 3

Let's identify (and graph) a couple of more conics!

• Simple Equations

  00:11:06Salman Khan 

  Introduction to basic algebraic equations of the form Ax=B.

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• Equations Part 2

  00:08:41Salman Khan 

  Slightly more complicated equations.

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• Equations Part 3

  00:08:53Salman Khan 

  Equations with the variable on both sides.

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• Linear Equations

  00:07:38Salman Khan 

  Solving linear equations with variable expressions in the denominators of fractions.

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• Graphing Lines Part 1

  00:09:49Salman Khan 

  Graphing linear equations.

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• Slope and Y-intercept Intuition

  00:08:35Salman Khan 

  Getting a feel for slope and y-intercept.

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• Slope Part 1

  00:08:27Salman Khan 

  Figuring out the slope of a line.

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• Slope Part 2

  00:09:46Salman Khan 

  Second part of determining the slope of a line.

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• Slope Part 3

  00:06:21Salman Khan 

  Part 3 of slope.

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• Averages

  00:08:36Salman Khan 

  Introduction to averages and algebra problems involving averages.

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• Integer Sums

  00:09:55Salman Khan 

  Adding sums of consecutive integers.

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• Taking Percentages

  00:09:54Salman Khan 

  Taking a percentage of a number.

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• Growing by a Percentage

  00:09:42Salman Khan 

  Growing a quantity by a percentage.

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• Another Percent Word Problem

  00:06:18Salman Khan 

  Finding the full price when you know the discount price.

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• More Percent Problems

  00:09:05Salman Khan 

  Slightly harder percent problems.

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• Systems of Equations

  00:09:57Salman Khan 

  Systems of equations.

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• Ratio Problem with Basic Algebra

  00:05:12Salman Khan 

  A slightly more involved ratio problem with algebra.

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• Ratio Problem: Advanced

  00:09:58Salman Khan 

  More advance ratio problem with algebra.

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• Alternate Solution to Ratio Problem

  00:07:02Salman Khan 

  An alternate solution to the advanced ratio problem in the last video.

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• Introduction to Ratios

  00:07:27Salman Khan 

  Basic ratio problems.

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• Advanced Ratio Problems

  00:09:57Salman Khan 

  More advanced ratio problems.

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• Age Word Problems Part 1

  00:07:12Salman Khan 

  Age word problems.

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• Age Word Problems Part 2

  00:09:56Salman Khan 

  Second set of age word problems.

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• Age Word Problems Part 3

  00:04:08Salman Khan 

  Part 3 of the presentation on age word problems.

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• Level 1 Multiplying Expressions

  00:07:58Salman Khan 

  (Ax+By)(Ax+By).

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• Solving a Quadratic by Factoring

  00:09:12Salman Khan 

  Factoring quadratics.

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• i and Imaginary Numbers

  00:09:17Salman Khan 

  Introduction to i. Raising i to arbitrary exponents.

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• Complex Numbers Part 1

  00:10:10Salman Khan 

  Introduction to complex numbers. Adding, subtracting and multiplying complex numbers.

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• Complex Numbers Part 2

  00:08:58Salman Khan 

  Dividing complex numbers. Complex conjugates.

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• Introduction to the Quadratic Equation

  00:09:15Salman Khan 

  Introduction to using the quadratic equation to solve 2nd degree polynomials.

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• Quadratic Equation Part 2

  00:09:14Salman Khan 

  2 more examples of solving equations using the quadratic equation.

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• Completing the Square

  00:13:45Salman Khan 

  Solving a quadratic by completing the square.

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• Quadratic Formula

  00:07:34Salman Khan 

  Deriving the quadratic formula by completing the square.

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• Quadratic Inequalities

  00:09:48Salman Khan 

  Solving quadratic inequalities using factoring.

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• Functions Part 1

  00:09:32Salman Khan 

  An introduction to functions.

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• Functions Part 2

  00:09:53Salman Khan 

  More examples of solving function problems.

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• Functions Part 3

  00:09:12Salman Khan 

  Even more examples of function exercises. Introduction of a graph as definition of a function.

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• Functions Part 4

  00:06:07Salman Khan 

  An example of a functions problem submitted by a youtube viewer.

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• Domain of a Function

  00:09:59Salman Khan 

  Figuring out the domain of a function.

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• Proof: log a + log b = log ab

  00:07:08Salman Khan 

  Proof of the logarithm property: log a + log b = log ab.

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• Proof: A(log B) = log (B^A), log A - log B = log (A/B)

  00:07:57Salman Khan 

  Proofs of the logarithm properties: A(log B) = log (B^A) and log A - log B = log (A/B).

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• Proof: log_a (B) = (log_x (B))/(log_x (A))

  00:07:25Salman Khan 

  Proof of the logarithm property.

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• Algebraic Long Division

  00:10:21Salman Khan 

  Dividing one polynomial into another.

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• Introduction to Conic Sections

  00:10:58Salman Khan 

  What are conic sections and why are they called "conic sections"?

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• Conic Sections: Circles

  00:09:04Salman Khan 

  Introduction to the Circle.

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• Conic Sections: Ellipses

  00:14:14Salman Khan 

  Introduction to the ellipse.

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• Conic Sections: Hyperbolas Part 1

  00:13:34Salman Khan 

  Introduction to the hyperbola.

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• Conic Sections: Hyperbolas Part 2

  00:07:30Salman Khan 

  Continuation of the intro to hyperbolas.

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• Conic Sections: Hyperbolas Part 3

  00:10:29Salman Khan 

  Part 3 of the intro to hyperbolas.

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• Identifying Conics Part 1

  00:09:11Salman Khan 

  Part 1 of identifying and graphic conic sections.

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• Identifying Conics Part 2

  00:11:28Salman Khan 

  Part 2 of identifying and graphing conic sections.

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• Identifying Conics Part 3

  00:11:34Salman Khan 

  Let's identify (and graph) a couple of more conics!

  Playing
• Foci of an Ellipse

  00:13:49Salman Khan 

  Calculating the foci (or focuses) of an Ellipse.

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• Foci of a Hyperbola

  00:15:24Salman Khan 

  Introduction to the foci (focuses) of a hyperbola.

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• Hyperbola Foci

  00:14:50Salman Khan 

  Proof of the hyperbola foci formula.

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• Partial Fraction Expansion Part 1

  00:11:28Salman Khan 

  Introduction to partial fraction expansion.

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• Partial Fraction Expansion Part 2

  00:13:02Salman Khan 

  A more complex problem.

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• Partial Fraction Expansion Part 3

  00:10:35Salman Khan 

  Dealing with repeated factors.

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• Parabola Focus and Directrix Part 1

  00:14:31Salman Khan 

  Parabola as the locus of all points equidistant from a point and a line.

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• Parabola Focus and Directrix Part 2

  00:18:28Salman Khan 

  Finding the focus and directrix of a parabola.

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• Two Passing Bicycles Word Problem

  00:05:39Salman Khan 

  Algebra word problem involving two bicycles passing each other.

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• Passed Bike Word Problem

  00:05:54Salman Khan 

  Fun algebra word problem involving a train passing a bike.

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• Passing Trains

  00:09:07Salman Khan 

  Trains passing at different rates.

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• Overtaking Word Problem

  00:09:52Salman Khan 

  3 people overtaking each other at different rates.

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• Early Train Word Problem

  00:07:07Salman Khan 

  Fun word problem that is almost a brain teaser.

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• Officer on Horseback

  00:08:54Salman Khan 

  Not quite a brain teaser but fun nonetheless!

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• Rational Inequalities Part 1

  00:11:49Salman Khan 

  Two ways to solve a rational inequality (or an inequality involving a fractional expression).

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• Rational Inequalities Part 2

  00:13:15Salman Khan 

  Slightly harder rational inequality problem.

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• Interesting Polynomial

  00:16:15Salman Khan 

  Finding the coefficients of a third degree polynomial given 2 roots and the y-intercept.

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• Geometric Series Sum to Figure Out Mortgage Payments

  00:17:36Salman Khan 

  Figuring out the formula for fixed mortgage payments using the sum of a geometric series.

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