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Showing videos from
**Eddie Woo**
with a total of **4,051** videos

09:37 The Quadratic Formula (Derivation)

1y6m ago

07:17 Series & Sequences: Working with a series that has equal sums

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05:27 Series & Sequences: Finding a general term from the sum formula

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08:51 Completing the Square (2 of 2: Example problem)

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11:05 Completing the Square (1 of 2: How does it help?)

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09:51 Partial Sums (2 of 2: Devising a formula)

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10:24 Partial Sums (1 of 2: Adding up terms in an arithmetic progression)

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11:38 The Quadratic Formula (Definition & example question)

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04:11 Y10 Review Questions (Quadratic equations)

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08:07 Series & Sequences Introduction (3 of 3: Geometric Progressions)

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12:01 Series & Sequences Introduction (2 of 3: Ways to define a sequence)

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04:16 Series & Sequences Introduction (1 of 3: Basic definitions)

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03:14 Direct Variation (5 of 5: Solving a problem through the equation)

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10:51 Direct Variation (4 of 5: Graphing a relationship with different horizontal axes)

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03:22 Direct Variation (3 of 5: Interpreting variation equations)

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08:34 Direct Variation (2 of 5: Forming variation equations)

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09:03 Direct Variation (1 of 5: Relating two changing quantities)

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07:19 HSC Parametrics Question (2 of 2: Understanding the locus)

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09:44 HSC Parametrics Question (1 of 2: Introduction)

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10:00 Geometric Proof with a Parabola (Worked Example 2)

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11:02 Geometric Proof with a Parabola (Worked Example 1)

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09:02 Finding Parabola Given Vertex, Direction & Tangent (2 of 2: Using the discriminant)

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07:05 Finding Parabola Given Vertex, Direction & Tangent (1 of 2: Introduction)

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11:49 The Reflective Property of Parabolas (3 of 3: Proof)

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10:11 The Reflective Property of Parabolas (2 of 3: Relating the relevant angles)

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07:56 The Reflective Property of Parabolas (1 of 3: Introduction)

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10:26 Solving Simultaneous Equations Algebraically

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05:53 Chord of Contact (3 of 3: Why is it the same as the tangent?)

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08:44 Chord of Contact (2 of 3: Deriving the formula)

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10:21 Chord of Contact (1 of 3: What is it?)

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08:52 Y10 Review Questions (Trigonometry, Simultaneous Equations)

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08:10 Parametrics of the Parabola - NESA Reference Sheet Walkthrough (2 of 2)

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08:32 Parametrics of the Parabola - NESA Reference Sheet Walkthrough (1 of 2)

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07:25 Tangents & Normals - Cartesian Equations

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04:58 Circle Geometry Proof - Triangles & Tangents

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06:36 Circle Geometry Proof (Touching circles with a second common tangent)

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11:56 Proof: Centres & point of contact are collinear on touching circles

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07:31 Area of a Triangle (Deriving the trigonometric formula)

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05:48 Chords on a Parabola (2 of 2: Exploring the focal chord visually)

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07:37 Chords on a Parabola (1 of 2: Deriving its equation)

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06:24 What does the parameter mean? (2 of 2: Understanding the geometry)

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07:10 What does the parameter mean? (1 of 2: Exploring the derivatives)

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03:28 Parametric equations → Cartesian equation (2 of 2: What's the graph?)

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11:12 Parametric equations → Cartesian equation (1 of 2: Manipulating with trigonometric identities)

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04:23 Introduction to Parametrics (2 of 4: How to eliminate a parameter)

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08:06 Introduction to Parametrics (1 of 4: Clarity & convenience)

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06:46 Cosine Rule (2 of 2: Example questions)

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09:43 Cosine Rule (1 of 2: Stating & re-arranging the formula)

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05:49 Y10 Review Questions (Sine Rule)

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11:24 Tangents of Circles (4 of 4: Angle in the alternate segment)

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05:10 Tangents of Circles (3 of 4: Tangents from an external point)

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07:00 Tangents of Circles (2 of 4: Tangent perpendicular to radius)

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08:40 Tangents of Circles (1 of 4: What are they?)

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04:06 Applying the Sine Rule (2 of 2: Finding an obtuse angle)

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05:55 Applying the Sine Rule (1 of 2: Finding an acute angle)

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05:18 Solving Trigonometric Equations with the Unit Circle

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07:07 Y10 Review Questions (Solving trigonometric equations with quadrants)

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08:40 The Sine Rule (2 of 2: Generalising the formula)

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06:38 The Sine Rule (1 of 2: Introduction through example)

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12:21 Y10 Review Questions (Solving simple trigonometric equations)

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08:08 Y10 Review Questions (Solving sin x = ½)

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09:58 Binomial Theorem question: "Coefficient of x³ is double the coefficient of x²"

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07:21 Working with a Quadratic Equation involving Algebraic Coefficients

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06:59 Finding the Domain of a Given Radical Function

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04:58 Adding Squares of Reciprocals of Roots

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03:26 Old School / New School (produced by NSWBC)

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08:05 Equal Overlapping Circles Question (2 of 2: Finding equal lengths)

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12:27 Equal Overlapping Circles Question (1 of 2: Identifying congruent triangles)

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11:27 Intro to Trigonometric Functions (2 of 2: Plotting the graph)

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09:44 Intro to Trigonometric Functions (1 of 2: Angles of any magnitude)

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06:48 Tough Circle Geometry Question (2 of 2: Proving points collinear)

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07:06 Tough Circle Geometry Question (1 of 2: Set up & initial arguments)

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