1,305 prompts matching "Solving a surd equation that gives an extraneous root"
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Spot My Mistake: Reading a probability from the standard normal table
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WAEC Prep: A question whose wording hides which distribution is meant
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WAEC Prep: Choosing between a binomial and a Poisson model
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WAEC Prep: The zero vector, and what it means
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WAEC Prep: Writing a two-dimensional vector in i and j form
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WAEC Prep: A three-dimensional vector parallel to another
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WAEC Prep: Writing a three-dimensional vector in i, j and k form
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Worked Example: The distance between two points in three dimensions
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Quiz: The direction of a vector as an angle with the x-axis
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WAEC Prep: A unit vector, and what makes it a unit
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Learn: The unit vectors i, j and k
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WAEC Prep: The distance between two points from their position vectors
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Worked Example: The triangle law of vector addition
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Learn: Subtracting one vector from another
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WAEC Prep: The angle between two three-dimensional vectors
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WAEC Prep: Showing a triangle is right-angled using the dot product
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WAEC Prep: Finding the angle between two vectors from their dot product
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Learn: The angle between a vector and one of the axes
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WAEC Prep: Writing a force as a vector in i and j form
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