1,334 prompts matching "Learn: What makes an expression in the roots symmetric"
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WAEC Prep: When Cramer's rule is quicker than elimination
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through when Cramer's rule
WAEC Prep: Setting out Cramer's rule for three simultaneous equations
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Practice: Turning a minor into a cofactor with the sign rule
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Explain Back: Writing out the full matrix of cofactors
I have just studied writing out the full matrix of cofactors in my SS3 Further Mathematics
WAEC Prep: The adjoint of the identity matrix
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Explain Back: Finding the adjoint of a 2 by 2 matrix quickly
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Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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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.
WAEC Prep: Writing two simultaneous equations as a single matrix equation
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Spot My Mistake: Why the inverse must be applied on the correct side
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WAEC Prep: Writing three simultaneous equations as a single matrix equation
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Practice: Comparing the inverse method with elimination for three equations
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Worked Example: Checking the solution of three equations by substitution
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Worked Example: The units of mass, and the SI unit
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WAEC Prep: The difference between a kilogram and a kilogram weight
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WAEC Prep: The resultant of two equal forces at sixty degrees
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Worked Example: The direction of the resultant of two forces
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Spot My Mistake: The greatest and the least resultant of two given forces
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WAEC Prep: Why one component vanishes when the direction is chosen well
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through why one component