1,334 prompts matching "Sum of the first n terms of an arithmetic series"
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Worked Example: The difference between a permutation and a combination
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WAEC Prep: Pascal's triangle and the combination numbers in it
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Learn: The Pythagorean identity, sin squared plus cos squared equals one
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Worked Example: The identities for one plus tan squared and one plus cot squared
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Spot My Mistake: The double angle formula for sine
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Quiz: The tangent curve and its asymptotes
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Explain Back: The effect of b in y equals sin bx on the period
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Learn: The distance between two points
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Explain Back: The equation of the line through two given points
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Quiz: Finding the centre and the radius from the general equation
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Learn: The parabola y squared equals 4ax, with its focus and directrix
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WAEC Prep: The hyperbola in standard form, and its asymptotes
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Quiz: The semi-interquartile range
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Worked Example: The sign convention for clockwise and anticlockwise moments
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Explain Back: Finding the reaction at each support of a loaded beam
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WAEC Prep: A couple, and why its moment is the same about every point
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Quiz: Relative velocity when the two motions are at right angles
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WAEC Prep: A car towing a trailer, and the force in the tow bar
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Learn: Resolving the weight along and perpendicular to an inclined plane
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Quiz: The centripetal force, and what supplies it in a given situation
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