1,326 prompts matching "What the formula gives when the discriminant is negative"
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Final Revision: Counting the number plates or codes that can be formed under a rule
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Final Revision: Combinations used with the addition and multiplication principles
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Common Mistakes: Expressing a cos x plus b sin x in the form R cos of x minus alpha
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Practice: Solving an equation of the form sin of 2x equals a given value
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Common Mistakes: Giving the general solution of a trigonometric equation
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Spot My Mistake: The effect of c in y equals sin x plus c
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Common Mistakes: Sketching two trigonometric curves on the same axes to find where they meet
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Final Revision: The graphs of y equals sec x, cosec x and cot x
Act as my WAEC Further Mathematics coach in the last week before the paper. I am in SS 3.
Practice: The equation of a line through a point with a given gradient
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Spot My Mistake: The general form ax plus by plus c equals nought
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Common Mistakes: The angle between two lines found from their gradients
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Worked Example: The equation of a circle with a given centre and radius
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Practice: The equation of a circle on a given diameter
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Spot My Mistake: The equation of the tangent to a circle at a point on it
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Common Mistakes: The condition for a line to be a tangent to a circle
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Spot My Mistake: The foci of an ellipse
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Final Revision: The focus-directrix definition shared by all the conics
Act as my WAEC Further Mathematics coach in the last week before the paper. I am in SS 3.
Spot My Mistake: The standard deviation of an ungrouped set of data
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Common Mistakes: The coefficient of variation, for comparing two sets
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