1,333 prompts matching "find the centre and radius of the circle x^2+y^2-4x+6y-3=0"
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WAEC Prep: What Cramer's rule gives when the system is inconsistent
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Quiz: Checking an inverse by multiplying to get the identity
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WAEC Prep: Checking the determinant before attempting a 3 by 3 inverse
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Spot My Mistake: Why the inverse must be applied on the correct side
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Practice: What a singular coefficient matrix says about the equations
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WAEC Prep: When the matrix method is worth the work for three unknowns
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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: Mass, and how it differs from weight
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Learn: Inertia, and what mass actually measures
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Quiz: Why mass stays the same wherever the body is taken
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WAEC Prep: Why one component vanishes when the direction is chosen well
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WAEC Prep: Resolving a force into horizontal and vertical components
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Quiz: Recovering the original force from its two components
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Explain Back: Showing that a system of concurrent forces is in equilibrium
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WAEC Prep: The forces on a body resting on a rough horizontal plane
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WAEC Prep: The forces on a body suspended by a single string
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Learn: A space diagram and a force diagram drawn side by side
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WAEC Prep: The three unknowns a rigid body problem usually carries
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WAEC Prep: The two conditions for a rigid body to be in equilibrium
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