1,332 prompts matching "Common sign errors in algebraic manipulation"
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Spot My Mistake: Squaring a bracket that contains a surd
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Spot My Mistake: Forming a new equation whose roots are the reciprocals of the original
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Spot My Mistake: Forming an equation whose roots are alpha squared and beta squared
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Spot My Mistake: The factor theorem for a divisor of the form ax minus b
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Spot My Mistake: Showing the solution of an inequality on a number line
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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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Spot My Mistake: The double angle formula for sine
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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Spot My Mistake: The effect of c in y equals sin x plus c
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Spot My Mistake: The equation of the tangent to a circle at a point on it
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Worked Example: The sign convention for clockwise and anticlockwise moments
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Spot My Mistake: The point at which a loaded beam will tip about its support
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Spot My Mistake: An aeroplane in a cross-wind, and its resultant track
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Worked Example: The common acceleration of two connected particles
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Spot My Mistake: Two particles on a pulley at the top of an inclined plane
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Spot My Mistake: The least force needed to move a body up a rough incline
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Spot My Mistake: A body on the end of a string moving in a horizontal circle
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Spot My Mistake: The time taken to move between two points in simple harmonic motion
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Spot My Mistake: A particle hanging in equilibrium on an elastic string
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