1,045 prompts matching "Checking an inverse by working the operation both ways"
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WAEC question on the factor theorem
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Quiz me on the inclusive sense of 'or' in a disjunction
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Teach me approximating powers using binomial expansion
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Worked example: evaluating a power using binomial expansion
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Teach me adding and subtracting matrices
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Spot my mistake multiplying a two by two matrix by a two by one matrix
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Teach me adding and subtracting vectors
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Quiz me on vector operations
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Worked example: standard deviation of a small data set
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Spot my mistake calculating standard deviation
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Simplify the surd expression sqrt(72) + sqrt(18)
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Simplify the surd expression sqrt(50) - sqrt(8)
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Simplify the surd expression (3+sqrt2)(3-sqrt2)
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Simplify the surd expression 5/(1+sqrt3)
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Simplify the surd expression (2+sqrt5)^2
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Solve the trigonometric equation 2cos(x) = 1, for 0 <= x <= 360
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Solve the trigonometric equation sin(2x) = 0.5, for 0 <= x <= 360
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Solve the trigonometric equation 3sin(x) - 1 = 0, for 0 <= x <= 360
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Solve the trigonometric equation cos^2(x) - sin^2(x) = 0.5, for 0 <= x <= 360
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Worked example: determine whether the argument 'if p then q; p; therefore q' is valid using a truth table
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