1,326 prompts matching "Quiz: Rationalising a denominator of the form one over root 3"
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Explain Back: Showing that AB and BA are usually different for 2 by 2 matrices
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Spot My Mistake: Squaring a 2 by 2 matrix
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Spot My Mistake: Multiplying a 3 by 3 matrix by a 3 by 1 column
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Spot My Mistake: A symmetric matrix, equal to its own transpose
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Worked Example: A singular matrix, and why it has no inverse
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Explain Back: Solving a matrix equation containing both a sum and a product
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Learn: Solving two simultaneous equations by Cramer's rule
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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Learn: Inertia, and what mass actually measures
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Learn: Converting a weight given in kilogram-force into newtons
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Learn: A space diagram and a force diagram drawn side by side
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Explain Back: A particle hanging from two strings set at different angles
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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Explain Back: A probability distribution table for a discrete random variable
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Explain Back: Finding n and p from a given mean and variance
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Learn: Finding lambda from a stated mean
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Explain Back: Converting a value to a z-score
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Worked Example: Finding a value from a given probability by working backwards
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Spot My Mistake: Drawing a vector as a directed line segment
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Worked Example: Testing two vectors for perpendicularity
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