1,045 prompts matching "The inverse of a 2 by 2 matrix as one over the determinant times the adjoint"
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Common Mistakes: Deciding between tautology, contradiction and contingency
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Worked Example: Premises and conclusion
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Spot My Mistake: Disjunctive syllogism
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Spot My Mistake: Arrangements with two particular items adjacent
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Common Mistakes: Arranging objects when some must stay in a fixed order
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Explain Back: Circular arrangements with two people kept apart
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Spot My Mistake: Arrangements round a table with men and women alternating
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Explain Back: Probability with replacement and without replacement
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Spot My Mistake: Expanding a bracket with a minus sign inside it
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IGCSE Additional Maths Y11: Converting degrees into radians — Worked Example
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IGCSE Additional Maths Y11: A composite region built from a rectangle and a sector — Common Mistakes
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IGCSE Additional Maths Y11: Finding every angle in a range with a given sine — Common Mistakes
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IGCSE Additional Maths Y11: Sketching y equals 3 sin 2x — Explain It Back
I am in SS 2. I have just studied sketching y equals 3 sin 2x for Cambridge IGCSE Addition
IGCSE Additional Maths Y11: An equation needing an identity before it can be solved — Explain It Back
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IGCSE Additional Maths Y11: Solving an equation that contains sec x — Show All Working
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IGCSE Additional Maths Y11: Equating coefficients to find an unknown constant — Common Mistakes
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IGCSE Additional Maths Y11: Proving three points collinear using vectors — Explain It Back
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IGCSE Additional Maths Y11: Proving a quadrilateral is a parallelogram using vectors — Show All Working
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IGCSE Additional Maths Y11: Differentiating x cubed from first principles — Worked Example
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IGCSE Additional Maths Y11: A tangent parallel to a given line — Explain It Back
I am in SS 2. I have just studied a tangent parallel to a given line for Cambridge IGCSE A