1,321 prompts matching "Writing out the terms of a sequence from its nth term"
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Learn: The order of the steps in inverting a 3 by 3 matrix
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Worked Example: Checking the solution of three equations by substitution
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Worked Example: The weight of a body as mass times g
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Worked Example: The direction of the resultant of two forces
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Learn: The resultant of two perpendicular forces
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Spot My Mistake: The greatest and the least resultant of two given forces
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Learn: The component of a force along a stated direction
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Spot My Mistake: Drawing the triangle of forces to scale to find an unknown force
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Worked Example: Using the sine rule on the triangle of forces
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Explain Back: Why the total moment about any point must be nought
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Learn: Choosing the point about which to take moments
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Worked Example: Drawing the polygon of forces to scale
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Spot My Mistake: Why friction does not depend on the area of contact
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Spot My Mistake: The moment of a force whose line of action is not perpendicular
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Learn: The algebraic sum of moments when the senses differ
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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Worked Example: Matching each force to the sine of the angle opposite it
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Learn: The expectation of a discrete random variable
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Learn: Finding the coefficient of a stated power in an expansion
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Spot My Mistake: The probability of exactly r successes in n trials
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