1,045 prompts matching "The three forms of the double angle formula for cosine"
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Learn: Factorising a quadratic whose coefficient of x squared is one
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Quiz: Factorising a difference of two squares in order to solve it
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Final Revision: Why completing the square always works
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Spot My Mistake: Finding a missing coefficient from a stated product of roots
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Final Revision: One root twice the other, and what that gives
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Learn: What makes an expression in the roots symmetric
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Practice: Polynomial notation such as P of x
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Final Revision: A word problem that uses the remainder theorem
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Worked Example: Testing a list of candidates to find a factor
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Practice: Showing that x plus 3 is a factor of a given polynomial
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Final Revision: A factor theorem question set in the WAEC style
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Quiz: A cubic with three distinct real roots
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Final Revision: Checking a root of a cubic by substitution
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Final Revision: A compound proposition built from three simple ones
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Worked Example: Conjunction in a three-variable truth table
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Learn: The conditional statement, if p then q
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Learn: The biconditional, p if and only if q
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Final Revision: A biconditional used in a mathematical definition
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Worked Example: Arranging r of n objects in a line
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Quiz: Arrangements of a word with no repeated letters
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