697 prompts matching "Checking a rationalised answer by decimal approximation"
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Structured question: quadratic with roots that differ by a given amount
I am in SS 3. Give me a structured question where I am told the roots of a quadratic diffe
Worked Example: Adding two 3 by 3 matrices
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Explain Back: Subtracting two 3 by 3 matrices
I have just studied subtracting two 3 by 3 matrices in my SS3 Further Mathematics class. L
Explain Back: Showing that AB and BA are usually different for 2 by 2 matrices
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Practice: A 2 by 2 matrix multiplied by a column vector
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Explain Back: Keeping track of the nine entries when multiplying 3 by 3 matrices
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Practice: The transpose of a 2 by 3 matrix
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Explain Back: The order of the answer when two matrices are multiplied
I have just studied the order of the answer when two matrices are multiplied in my SS3 Fur
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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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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Explain Back: Finding the adjoint of a 2 by 2 matrix quickly
I have just studied finding the adjoint of a 2 by 2 matrix quickly in my SS3 Further Mathe
Learn: Swapping and negating the entries when inverting a 2 by 2 matrix
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Practice: Why a 2 by 2 matrix with determinant nought cannot be inverted
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Learn: The order of the steps in inverting a 3 by 3 matrix
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Explain Back: Solving two simultaneous equations by multiplying by the inverse
I have just studied solving two simultaneous equations by multiplying by the inverse in my
Learn: A space diagram and a force diagram drawn side by side
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Learn: Finding two unknown forces by Lami's theorem
You are my personal SS3 Further Mathematics tutor. Teach me finding two unknown forces by