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  1. L

    Mathematics Extension 1 Exam Predictions/Thoughts

    probably 2? my teacher says error carried forward doesn't work this way because you've changed the nature of the question
  2. L

    Mathematics Extension 1 Exam Predictions/Thoughts

    well 4u doubles ur 3u mark but i've not clue how everything works
  3. L

    Mathematics Extension 1 Exam Predictions/Thoughts

    i agree but i still think f(x) is continuous is important because if it isn't continuous, there doesn't have to be a root between x2 and x1
  4. L

    Mathematics Extension 1 Exam Predictions/Thoughts

    ahh i think I know what you mean. But it was given that x1 = k, and x2 = k+1/k^2, so x2> x1
  5. L

    Mathematics Extension 1 Exam Predictions/Thoughts

    hold a sec -- couldn't it be as simple as there must be a root between x1 and x2 given the change of signs and the fact that fx is continuous?
  7. L

    Mathematics Extension 1 Exam Predictions/Thoughts

    yep but i think it was important that you had to mention: 1. alpha is the only root, hence it its alpha thats between the region 2. the function is continuous
  8. L

    Mathematics Extension 1 Exam Predictions/Thoughts

    hey lads what do we reckon the raw mark needs to be for a state rank?
  9. L

    Maths Extension 2 predictions/thoughts?

    what does everyone think a 90-93 will align to? thanks
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