1,278 prompts matching "Find sum and product of roots of x^2 + 4x - 12 = 0"
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Explain Back: What a coefficient determinant of nought says about the system
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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Explain Back: Writing out the full matrix of cofactors
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Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Explain Back: The inverse of a diagonal matrix
I have just studied the inverse of a diagonal matrix in my SS3 Further Mathematics class.
Worked Example: Checking the solution of three equations by substitution
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WAEC Prep: Mass, and how it differs from weight
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Learn: Inertia, and what mass actually measures
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WAEC Prep: The difference between a kilogram and a kilogram weight
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WAEC Prep: The newton, and how it is defined
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Worked Example: The weight of a body as mass times g
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Explain Back: The resultant of two forces acting in the same straight line
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Worked Example: The direction of the resultant of two forces
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WAEC Prep: Resolving a force into horizontal and vertical components
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Explain Back: Showing that a system of concurrent forces is in equilibrium
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Learn: A space diagram and a force diagram drawn side by side
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Worked Example: Using the sine rule on the triangle of forces
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Worked Example: Drawing the polygon of forces to scale
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WAEC Prep: Friction, and the direction in which it acts
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