755 prompts matching "Finding the angle between two vectors from their dot product"
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Common Mistakes: The Fibonacci sequence and the rule behind it
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Final Revision: Describing a sequence in words and then in symbols
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Show All Working: Deciding whether a number belongs to a given arithmetic progression
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Worked Example: The alternative sum formula that uses the last term
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Spot My Mistake: The sum of an arithmetic progression with a negative common difference
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WAEC Prep: A word problem about seats in the rows of a hall
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Common Mistakes: Proving the sum formula by pairing the terms
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Final Revision: Deciding whether a given sequence is a geometric progression
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Worked Example: Which form of the sum formula to use when r is less than one
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Explain Back: The sum of a geometric progression with a negative common ratio
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Show All Working: The sum to infinity of a geometric progression, and when it exists
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Common Mistakes: A bouncing ball problem, and the total distance travelled
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Final Revision: Proving the sum formula for a geometric progression
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Worked Example: Adding or subtracting the same number on both sides
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WAEC Prep: Showing the solution of a linear inequality on a number line
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Show All Working: Writing the solution of an inequality as a set
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Worked Example: The critical values of a quadratic inequality
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Explain Back: The solution when the quadratic expression is greater than nought
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Spot My Mistake: The solution when the quadratic expression is less than nought
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Worked Example: Solving the equation modulus of x equals a
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