1,483 prompts matching "Subtracting the position vectors in the wrong order"
Worked example: Deriving the negative index from the division law
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Word problem: The fractional index and the root it stands for
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Teach me: Naming the opposite, adjacent and hypotenuse
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Spot my mistake: The sign of each ratio in the four quadrants
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Teach me: The shape and period of the sine and cosine curves
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Worked example: Finding the height of a mast from its angle of elevation
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Teach me: A logarithm as the index a base must be raised to
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Worked example: Using the power law to simplify a logarithmic expression
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Worked example: Bringing a negative number into the right residue class
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Worked example: The number of elements in a set
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Word problem: The complement of a set in a survey problem
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Worked example: The formula for the number in a union
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Worked example: The converse, inverse and contrapositive
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Teach me: What changing the subject of a formula means
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Spot my mistake: Changing the subject when the letter is under a root
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Worked example: Changing the subject when the letter occurs on both sides
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Word problem: Substituting after rearranging, rather than before
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Spot my mistake: Finding the constant from one pair of values
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Worked example: Using the constant to predict a further value
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Word problem: Recognising the type of variation from a table
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