823 prompts matching "Showing a set is not closed by a single counter-example"
Showing only prompts that state their year. 35 more in this subject don't name one, so choose All years to see them.
IGCSE Additional Maths Y11: The notation used for a definite integral — Worked Example
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Take me through one co
IGCSE Additional Maths Y11: Why the constant of integration disappears — Common Mistakes
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Show me the mistake ca
IGCSE Additional Maths Y11: The volume of revolution about the x-axis — Common Mistakes
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Show me the mistake ca
IGCSE Additional Maths Y11: Differentiating displacement to get velocity — Worked Example
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Take me through one co
IGCSE Additional Maths Y11: The direction of motion changing sign — Common Mistakes
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Show me the mistake ca
Give me practice on quadratic trinomial factorisation
Act as my SS2 Further Maths tutor. Give me ten practice questions on factorising quadratic
Explain factorising quadratics back to me
Act as my SS2 Further Maths tutor. I want to check my understanding of factorising quadrat
WAEC-style factorisation question
Act as my SS2 Further Maths tutor. Give me a WAEC Further Mathematics exam-style question
Worked example: factorising a harder trinomial
Act as my SS2 Further Maths tutor. Show me a full worked example of factorising a quadrati
Spot my mistake solving x^2-3x-10=0
Act as my SS2 Further Maths tutor. I solved x^2-3x-10=0 and got x=2 or x=-5. Check my work
Teach me the completing the square when the coefficient of x squared is one
You are my SS2 Further Mathematics tutor. Teach me completing the square when the coeffici
Quiz me on the using the discriminant to describe the roots
Act as my SS2 Further Mathematics tutor and quiz me on using the discriminant to describe
Spot my mistake using the quadratic formula
Act as my SS2 Further Maths tutor. I used the quadratic formula on 2x^2-3x-5=0 but I think
Discriminant and the nature of roots
Act as my SS2 Further Maths tutor. Teach me how to use the discriminant b^2-4ac from the q
Spot my mistake with sum and product of roots
Act as my SS2 Further Maths tutor. I calculated the sum and product of the roots of 2x^2-5
Worked example: is this line tangent to this curve
Act as my SS2 Further Maths tutor. Show me a full worked example of substituting a line's
Spot my mistake finding a tangent condition
Act as my SS2 Further Maths tutor. I substituted my line into the curve equation to find w
Spot my mistake adding polynomials
Act as my SS2 Further Maths tutor. I added two polynomials together but I think I mismatch
Explain polynomial long division back to me
Act as my SS2 Further Maths tutor. I'll explain the steps of polynomial long division back
Divide a polynomial by a quadratic
Act as my SS2 Further Maths tutor. Show me a worked example of dividing a polynomial of de