1,467 prompts matching "The standard deviation of grouped data using class midpoints (IGCSE/WAEC Revisio"
Quiz me: The place values of a number written in base five
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WAEC pitfalls: Treating the digits of a base number as base ten digits
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Quiz me: Why subtracting indices divides powers of the same base
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Spot my mistake: The sign of each ratio in the four quadrants
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Quiz me: The shape of the tangent curve and its asymptotes
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Spot my mistake: The angle of depression and its relation to elevation
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Worked example: Finding the height of a mast from its angle of elevation
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WAEC pitfalls: Taking the angle from the vertical instead of the horizontal
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Practice set: The logarithm of one, and of the base itself
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Spot my mistake: The law for the logarithm of a quotient
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Worked example: Using the power law to simplify a logarithmic expression
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WAEC pitfalls: Treating the logarithm of a sum as the sum of logarithms
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Practice set: Using antilogarithms to return to the number
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Worked example: The shape of a logarithmic graph
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Worked example: Bringing a negative number into the right residue class
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Word problem: The cycle length of a modulus
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Nigerian scenario: Market days and the days of the week as modular cycles
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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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Practice set: The difference of two sets
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