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  1. A

    Solid rotaion

    Yeah that's what I did, and then I added the two parts to get 24pi. Do have to divide the answer by 2 or is it correct if I leave it as that
  2. A

    Solid rotaion

    Hi I need help with question 32. ii). I solved it and got 24pi, but feel as if it's wrong. If someone can help me out it would be great
  3. A

    hopefully my last question for proofing

    thank you, you have helped alot
  4. A

    hopefully my last question for proofing

    thank you
  5. A

    Proofing question

    thank you
  7. A

    Proofing question

    does this work for part (ii). I tried it and got something else
  8. A

    hopefully my last question for proofing

    This is hopefully my last question for proofing if x,y,z \in real numbers and x \neq y \neq z i) prove x^2 + y^2 + z^2 > yz + zx + xy ii) if x + y + z = 1, show yz + zx + xy < 1/3
  9. A

    Proofing question

    Question 25.ii)
  10. A

    Contrapositivity question

    Question 15. If ab is divisible by 3, prove by contrapositive that a or b is divisible by 3.
  11. A

    Induction

    thank you absolute legend
  13. A

    Induction

    If you were able to help with another question it would be greatly appreciated. It's question 31. Thank you
  14. A

    More proofing i cant do

    Thank you.
  15. A

    More proofing i cant do

    I'm not the best at maths, but that is 6 hours of stress altogether.
  16. A

    More proofing i cant do

    nah straight to the 1967 hsc questions
  17. A

    More proofing i cant do

    If anyone can solve question 34 it will be really helpful.
  19. A

    Proof and induction questions

    If anyone can solve question 31 it will be really helpful.
  20. A

    Induction

    Thank you, this helps a lot.
  21. A

    Induction

    If anyone can solve question 38 it would be appreciated. I suck at induction.
  22. A

    Induction

    If anyone can solve question 39 it would be appreciated
  23. A

    Induction

    If anyone can solve question 40. (ii) it would be appreciated
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