1,325 prompts matching "A word problem solved with the quadratic formula"
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Worked Example: Adding two 3 by 3 matrices
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Practice: A 2 by 2 matrix multiplied by a column vector
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Worked Example: Taking a common factor out of a matrix
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Practice: A diagonal matrix
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Worked Example: A singular matrix, and why it has no inverse
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Practice: Evaluating AB minus BA
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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Practice: Finding an unknown force from a closed polygon
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Practice: Resolving three forces in two perpendicular directions
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Worked Example: Finding a particular term of a binomial expansion
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Practice: Using a binomial expansion to approximate a number
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Worked Example: Finding a value from a given probability by working backwards
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Practice: A vector of stated magnitude in a given direction
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Worked Example: Testing two vectors for perpendicularity
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Practice: Equating real and imaginary parts to find two unknowns
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Worked Example: Squaring a complex number
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Practice: Converting a complex number from polar form back to a plus bi
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Practice: Differentiating x squared from first principles
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Practice: Differentiating sin x and cos x
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Worked Example: Differentiating a bracket raised to a power
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