1,333 prompts matching "Checking an inverse by working the operation both ways"
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Worked Example: The sum of the products of the roots of a cubic taken two at a time
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Quiz: The product of the roots of a cubic
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Explain Back: Solving an inequality that involves a modulus
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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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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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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Worked Example: The midpoint formula applied to a given segment
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Quiz: The gradient of the line through two points
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WAEC Prep: Proving two given lines parallel from their gradients
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Final Revision: The equation of the circle through three given points
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Worked Example: The parametric form of a point on a parabola
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Common Mistakes: The coefficient of variation, for comparing two sets
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Final Revision: Reading the quartiles off a cumulative frequency curve
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Quiz: The principle of moments for a body in equilibrium
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Spot My Mistake: The point at which a loaded beam will tip about its support
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Common Mistakes: The centre of gravity of a uniform lamina
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Worked Example: Relative velocity when two bodies move along the same line
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