667 prompts matching "A quadratic that must be rearranged before factorising (Show That / Hence Find)"
Worked example: Verifying an inverse by multiplying back to the identity
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Practice set: Finding the inverse of a given 2 by 2 matrix
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Spot my mistake: Multiplying by the inverse on the wrong side
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Worked example: Solving a 2 by 2 system by the matrix method
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Practice set: Cramer's rule as an alternative method
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Spot my mistake: Plotting a point from the wrong row of the table
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Practice set: Finding the roots from where the curve cuts the x-axis
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Spot my mistake: Reading the intersection off the wrong axis
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Practice set: Solving simultaneous equations graphically
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Spot my mistake: Shading the wrong side of a boundary line
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Worked example: Testing the vertices of the feasible region
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Practice set: Finding the maximum of an objective function
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Spot my mistake: Plotting cumulative frequency at the class midpoint
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Worked example: Estimating the median from a cumulative frequency curve
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Practice set: Estimating quartiles and percentiles from an ogive
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Spot my mistake: Letting positive and negative deviations cancel
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Worked example: The mean deviation of an ungrouped data set
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Practice set: The mean deviation of grouped data
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Worked example: Reading a quantity from a pie chart given the total
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Spot my mistake: Rounding twice and drifting away from the true value
Act as my SS3 Mathematics tutor. Work a question on rounding twice and drifting away from