1,328 prompts matching "Practice: A cubic with one real root and two complex ones"
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WAEC Prep: Setting out the coefficient determinant for two simultaneous equations
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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Spot My Mistake: Checking cofactors by expanding the determinant along a second row
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WAEC Prep: The inverse of a 2 by 2 matrix as one over the determinant times the adjoint
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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Explain Back: Solving two simultaneous equations by multiplying by the inverse
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Quiz: Solving three simultaneous equations with the inverse matrix
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Learn: Inertia, and what mass actually measures
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WAEC Prep: The resultant of two equal forces at sixty degrees
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WAEC Prep: The resultant of two forces acting at the same point
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Explain Back: The resultant of two forces acting in the same straight line
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: Two forces acting in opposite directions
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WAEC Prep: The magnitude of the resultant of two forces inclined at an angle
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WAEC Prep: The component of a force at thirty degrees to the horizontal
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WAEC Prep: Why one component vanishes when the direction is chosen well
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Learn: The component of a force along a stated direction
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WAEC Prep: A table of components used to find a resultant
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WAEC Prep: Summing the components of several concurrent forces
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