1,325 prompts matching "use matrices to solve the simultaneous equations 2x+y=8 and x-y=1"
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Worked Example: The difference between a permutation and a combination
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Worked Example: The identities for one plus tan squared and one plus cot squared
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Quiz: The compound angle formula for sine of A plus B
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Practice: The compound angle formula for cosine of A minus B
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Explain Back: The compound angle formula for tan of A plus B
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Spot My Mistake: The double angle formula for sine
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Quiz: Solving tan x equals a given value, and the period of the tangent
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WAEC Prep: Solving an equation by first applying a double angle formula
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Worked Example: The shape, period and range of the cosine curve
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Practice: The effect of a in y equals a sin x
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Explain Back: The effect of b in y equals sin bx on the period
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Spot My Mistake: The effect of c in y equals sin x plus c
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Final Revision: The graphs of y equals sec x, cosec x and cot x
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Quiz: The gradient of the line through two points
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Spot My Mistake: The general form ax plus by plus c equals nought
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Explain Back: Deciding whether a point lies inside, on or outside a circle
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Worked Example: The parametric form of a point on a parabola
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Practice: The ellipse in standard form, and its two axes
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Explain Back: The eccentricity of an ellipse
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