Search results

  1. B

    Counting Question

    This is for HSCers - veterans please don't answer, at least until it's been open for a while. You are permitted to climb an n-step staircase by climbing one or two stairs with each step. For example, you might climb a 12-step staircase as follows: 2-2-1-2-1-1-1-2 Explain why the number of ways...
  2. B

    2017 Mathematics Trial Papers

    Some 2 Unit Trial Papers: https://drive.google.com/drive/folders/0B2v56RP5XU7GVzYwSWJGX19Zclk?usp=sharing
  3. B

    2017 Extension 2 Trial Papers

    Some Extension 2 Trials: https://drive.google.com/drive/folders/0B2v56RP5XU7GZ2RDWFdwMFdIM0U?usp=sharing
  4. B

    2017 Extension 1 Trial Papers

    Some Extension 1 Trials: https://drive.google.com/drive/folders/0B2v56RP5XU7GcVliSmI5ekZtdUk?usp=sharing
  5. B

    2016 Extension 2 Trial Papers

    Link: Extension 2
  6. B

    2016 Extension 1 Trial Papers

    A link to selective HS trial papers: Extension 1
  7. B

    2016 2 Unit Trials

    2 Unit
  8. B

    2016 Trial Papers

    Here are links to some 2016 Trial papers: 2 Unit Extension 1 Extension 2
  9. B

    Extension 1 Trials

    Here are 16 selective school 2015 Ext 1 trials: https://drive.google.com/folderview?id=0Bw6Jsw5hm__LfmVsLWJIT2VkRmFwa00zVzBBa21WT21KRkdsbVVsbDJRQml4WnFwbFRPWXc&usp=sharing
  10. B

    Extension 2 Trials

    Here are 17 selective school 2015 trials: https://drive.google.com/folderview?id=0Bw6Jsw5hm__LfmRoWk9RZ2Q5dlQtb1FXU3FUS3BIbW5zWkRYX2ctWXdzbE1VY3ppQ0tQWjQ&usp=sharing
  11. B

    Hyperbolic Paraboloid

    Can it be shown algebraicly (ie. without calculus) that a hyperbolic paraboloid is doubly ruled? I mean ... using 'high school standard' algebra.
  12. B

    Latest Posts

    I notice that the posts I made yesterday do not appear under "Find latest posts". My most recent post on that list is from June 3. Could this be fixed.
  13. B

    Subject - ATAR Comparison

    The attachment shows for each subject the rough percentage of the candidature who score a mark which equates to an ATAR of 99 or more. Only subjects which typically attract more than 2000 candidates are shown. Edit: Left off General Maths. Its around 0.5%
  14. B

    Site Speed

    Is it just me, or is this site EXTREMELY slow today?
  15. B

    Braintic Solutions

    Time to join the bandwagon and add my (hopefully) finished solutions.
  16. B

    Higher Derivatives and Counting Theory

    We all know the product rule f ' = u'v + uv' When you keep differentiating you get f '' = u''v + 2u'v' + uv'' f ''' = u'''v + 3u''v' + 3u'v'' + uv''' f '''' = u''''v + 4u'''v' + 6u''v'' + 4u'v''' + uv'''' So you get something akin to the binomial expansion. (And the undifferentiated f = uv...
  17. B

    Question 16

    .
  18. B

    Question 14

    .
  19. B

    Question 11

    .
Top