1,321 prompts matching "Why root 8 and root 2 turn out to be similar"
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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
Spot My Mistake: Forming the determinant Dx by replacing the first column
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Worked Example: Forming the determinant Dy by replacing the second column
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Learn: Solving two simultaneous equations by Cramer's rule
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WAEC Prep: The determinant Dz in a system of three unknowns
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through the determinant Dz
WAEC Prep: What Cramer's rule gives when the system is inconsistent
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Spot My Mistake: Checking a Cramer's rule solution by substituting back
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WAEC Prep: The adjoint of the identity matrix
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Spot My Mistake: Finding the adjoint of a 3 by 3 matrix
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Worked Example: The identity that A times its adjoint gives the determinant times the identity
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WAEC Prep: The inverse of a 2 by 2 matrix with a fractional determinant
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WAEC Prep: The inverse of an inverse
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Learn: The order of the steps in inverting a 3 by 3 matrix
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Quiz: Checking a 3 by 3 inverse by multiplication
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WAEC Prep: Simultaneous equations with fractional coefficients solved by matrix
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WAEC Prep: A three-unknown system arising from a word problem
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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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Worked Example: Checking the solution of three equations by substitution
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WAEC Prep: The weight of a body on the moon compared with on earth
Act as my WAEC Further Mathematics coach. I am in SS 3. Take me through the weight of a bo