1,015 prompts matching "Finding how many terms an arithmetic progression has"
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Worked Example: The identity linking alpha squared plus beta squared to the sum and product
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Worked Example: Substituting into the quadratic and tidying up
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Explain Back: Writing the answers as ordered pairs
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Spot My Mistake: A pair with equal roots, meaning one solution only
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Worked Example: The discriminant used as the test for intersection
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Learn: What makes an expression a polynomial
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Explain Back: A division that leaves a constant remainder
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Explain Back: Finding a coefficient when the remainder is given
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Worked Example: Testing a list of candidates to find a factor
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Explain Back: Finding a coefficient so that a stated expression is a factor
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Worked Example: Factorising a cubic into a linear and a quadratic factor
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Quiz: Disjunction and the inclusive or
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Quiz: Why a conditional with a false antecedent counts as true
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Learn: The biconditional, p if and only if q
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Explain Back: Showing two statements equivalent by truth table
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Spot My Mistake: De Morgan's laws in logic
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Explain Back: Showing that a statement is a contradiction
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Learn: What makes an argument valid
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Worked Example: Premises and conclusion
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Learn: Arranging five different books on a shelf
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