1,154 prompts matching "Checking a factorisation by expanding it again"
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Spot My Mistake: A symmetric matrix, equal to its own transpose
Act as my SS3 Further Mathematics tutor. Work a question on a symmetric matrix, equal to i
WAEC Prep: The identity matrix of order three
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WAEC Prep: The identity matrix, and what it does in a product
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Quiz: The zero matrix, and how it differs from nought in arithmetic
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Worked Example: A singular matrix, and why it has no inverse
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WAEC Prep: Stating the order of a product before working it out
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through stating the order
Practice: The condition on the orders for a product to exist
Act as my SS3 Further Mathematics tutor. Give me five practice questions on the condition
WAEC Prep: A matrix expression with brackets to expand
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WAEC Prep: The determinant of a matrix with a row of noughts
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through the determinant of
WAEC Prep: The determinant of the identity matrix
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Worked Example: What a determinant of nought means for a 2 by 2 matrix
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Practice: The sign pattern of the cofactors in a 3 by 3 determinant
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Worked Example: Evaluating a 3 by 3 determinant by the rule of Sarrus
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WAEC Prep: Cramer's rule applied to a pair with fractional coefficients
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Worked Example: Forming the determinant Dy by replacing the second column
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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
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through the adjoint of the
Worked Example: The identity that A times its adjoint gives the determinant times the identity
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WAEC Prep: Writing two simultaneous equations as a single matrix equation
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