1,315 prompts matching "Proving the sum formula by pairing the terms"
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Worked Example: Classifying a stationary point by the sign of the gradient either side
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WAEC Prep: The area under a straight line checked by a trapezium
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Explain Back: The greatest height reached by a body thrown upwards
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WAEC Prep: The greatest height reached by a projectile
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WAEC Prep: The work done by a constant force
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WAEC Prep: The nth term of an arithmetic progression
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Worked Example: Finding the first term and the common difference from two given terms
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WAEC Prep: The nth term of a geometric progression
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Spot My Mistake: Finding the common ratio from two given terms
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WAEC Prep: Why the sum to infinity fails when the ratio reaches one
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Practice: The sum to infinity of a convergent geometric series
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WAEC Prep: The coefficient of the term in x to the power r
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WAEC Prep: Expanding a bracket by the binomial theorem
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Quiz: The general term of a binomial expansion
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Practice: The middle term when the power is odd
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WAEC Prep: The remainder when a polynomial is divided by a quadratic
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Quiz: The remainder theorem, and the remainder on dividing by x minus a
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Explain the rule of signs for determinants
Explain the checkerboard pattern of positive and negative signs used when expanding a 3x3
Teach me how to find the writing the inverse of a two by two matrix with the adjugate
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Learn: Simplifying a surd by extracting the largest perfect square
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