1,316 prompts matching "The alternative sum formula that uses the last term"
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Show all working: the determinant of a three by three matrix
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Spot My Mistake: De Morgan's law that the complement of a union is the intersection of the complements
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WAEC Prep: The change of base formula for logarithms
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Learn: The sum and the product of the roots read from the coefficients
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Learn: Finding alpha squared plus beta squared from the sum and product
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Practice: Finding alpha minus beta from the sum and the product
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Explain Back: Finding an unknown coefficient given that a stated factor divides the polynomial
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Learn: The sum of the roots of a cubic read from its coefficients
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Worked Example: The sum of the products of the roots of a cubic taken two at a time
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Quiz: The compound angle formula for sine of A plus B
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Practice: The compound angle formula for cosine of A minus B
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Explain Back: The compound angle formula for tan of A plus B
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Spot My Mistake: The double angle formula for sine
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WAEC Prep: The three forms of the double angle formula for cosine
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Worked Example: The midpoint formula applied to a given segment
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WAEC Prep: The standard deviation of grouped data using an assumed mean
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Explain Back: The course to steer so that a boat crosses straight over
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Learn: Hooke's law, and what the modulus of elasticity means
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Worked Example: The tension in a stretched elastic string
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