1,333 prompts matching "Why a rational number added to an irrational one stays irrational"
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WAEC Prep: The component of a force at thirty degrees to the horizontal
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Spot My Mistake: Drawing the triangle of forces to scale to find an unknown force
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Practice: Why the forces must sum to nought in two perpendicular directions
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Worked Example: The total moment of three parallel forces about one end
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Quiz: The point about which the total moment of a set of forces vanishes
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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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WAEC Prep: The probabilities of nought, one and two successes read off an expansion
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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WAEC Prep: The probability that a normal variable exceeds the mean by more than one standard deviation
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WAEC Prep: A vector of magnitude one in three dimensions
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Quiz: The direction of a vector as an angle with the x-axis
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Learn: The unit vectors i, j and k
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WAEC Prep: Adding three vectors in component form
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WAEC Prep: Adding two vectors given in component form
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Worked Example: The triangle law of vector addition
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WAEC Prep: The dot product used to find the work done by a force
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Explain Back: The resultant of forces given as vectors
I have just studied the resultant of forces given as vectors in my SS3 Further Mathematics
WAEC Prep: The geometric meaning of adding two complex numbers
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Practice: The sum of a complex number and its conjugate
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