1,334 prompts matching "Number of elements in a set from a Venn diagram region count"
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WAEC Prep: What Cramer's rule gives when the system is inconsistent
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Quiz: Arranging the equations in standard form before applying Cramer's rule
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Worked Example: The identity that A times its adjoint gives the determinant times the identity
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Quiz: Checking an inverse by multiplying to get the identity
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse
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Quiz: Checking a 3 by 3 inverse by multiplication
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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Practice: What a singular coefficient matrix says about the equations
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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Quiz: Solving three simultaneous equations with the inverse matrix
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Practice: Comparing the inverse method with elimination for three equations
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WAEC Prep: The newton, and how it is defined
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WAEC Prep: Resolving before compounding several forces
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WAEC Prep: Two forces acting in opposite directions
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Learn: The resultant of two perpendicular forces
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Spot My Mistake: The greatest and the least resultant of two given forces
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WAEC Prep: Resolving a force into horizontal and vertical components
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Learn: The component of a force along a stated direction
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WAEC Prep: The forces on a body resting on a rough horizontal plane
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