1,325 prompts matching "use matrices to solve the simultaneous equations 2x+y=8 and x-y=1"
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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Worked Example: Matching each force to the sine of the angle opposite it
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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WAEC Prep: Expanding p plus q, all to the power n, as a probability model
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WAEC Prep: The binomial expansion of a plus b all to the power n
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WAEC Prep: Using the mean of a Poisson distribution to find a probability
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WAEC Prep: Why the total area under the normal curve is one
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Quiz: Reading the wording of a question to decide which distribution applies
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WAEC Prep: The zero vector, and what it means
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Practice: The components of a vector given its magnitude and direction
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WAEC Prep: The position of a point in space written as a vector
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WAEC Prep: A three-dimensional vector parallel to another
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Quiz: The direction cosines of a vector in three dimensions
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WAEC Prep: The magnitude of a vector after multiplication by a scalar
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WAEC Prep: The magnitude of a two-dimensional vector
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Quiz: The direction of a vector as an angle with the x-axis
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Practice: The magnitude of the sum of two vectors
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WAEC Prep: The unit vector in the direction of a displacement
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Worked Example: Finding the unit vector in the direction of a given vector
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