757 prompts matching "Let me explain: Factorising a quadratic whose leading coefficient is one"
WAEC pitfalls: Assuming matrix multiplication is commutative
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Practice set: Multiplying a matrix by a scalar
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Real-life Nigeria: The identity matrix, and what it does
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Word problem: A problem in which a singular matrix leaves no solution
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Worked example: Verifying an inverse by multiplying back to the identity
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WAEC pitfalls: Dividing by a determinant of zero
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Practice set: Finding the inverse of a given 2 by 2 matrix
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Real-life Nigeria: What a zero determinant tells you about a system
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Spot my mistake: Multiplying by the inverse on the wrong side
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Word problem: A two-commodity pricing problem solved by matrices
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Real-life Nigeria: Recognising a system that has no unique solution
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Spot my mistake: Plotting a point from the wrong row of the table
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WAEC pitfalls: Joining the plotted points of a curve with straight lines
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Practice set: Finding the roots from where the curve cuts the x-axis
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Real-life Nigeria: Reading the maximum or minimum value off the graph
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Spot my mistake: Reading the intersection off the wrong axis
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Word problem: A break-even point found from two drawn lines
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WAEC pitfalls: Giving a graphical answer to more accuracy than the scale allows
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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
Act as my SS3 Mathematics tutor. Work a question on shading the wrong side of a boundary l