A-Maths: Differentiation Application - Stationary Value [Video]

Differentiation - Find Minimum Gradient of Curve Question

I received this question on finding minimum gradient of a curve and it is confusing for many students as they probably lack the flexibility in seeing gradient beyond dy/dx.

I have presented this question in a slightly different manner by reducing the usage of  first derivative (dy/dx) and second derivative (d^2y/dx^2).

Check the 3 minutes video by clicking on the video to find out the step-by-step solutions and the explanations.

Video URL: https://youtu.be/K5-LaQUXo94

2015 O-Level Results Release on 11 January 2016

  • The results of the 2015 Singapore-Cambridge General Certificate of Education Ordinary Level (GCE O-Level) examination will be released on Monday, 11 January 2016.


  • School candidates may collect their results from their schools at 2.00 pm on 11 January 2016.


  • Private candidates will be notified of their individual results by post. The result slips will be mailed on 11 January 2016 to the address provided by the candidates during the registration period. Private candidates who are eligible for SingPass can also use their SingPass account to obtain their results online via the internet Examination Results Release System (iERRS) on Singapore Examinations and Assessment Board’s website at www.seab.gov.sg from 2.00 pm on 11 January 2016.

Source: http://www.moe.gov.sg/media/press/2016/01/release-of-2015-singapore-cambridge-gce-o-level-examination-results-and-2016-joint-admissions-exercise.php



2015 GCE O-Level Additional Maths 4047 Paper 1 Post Mortem Not Solutions

After doing the revised syllabus 4047 GCE O-Level Additional Maths Paper 1, it reconfirms that Cambridge is testing basic concepts but presented in a different manner.

There are a few questions which are truly testing your application like the one on quadratic curve is always negative, range of m for which the graphs have two intersection points ...

I highly recommend all candidates to read your question carefully, keep asking yourself if you have answered the question.

An additional point to highlight is look at the allocation of marks to gauge the amount of working to present, the choice of approaches to use.

Based on what have been tested in Paper 1, we are looking forward to the following concepts in Paper 2:

  • Indices
  • Sum & Product of roots
  • Factor Remainder Theorem (solving cubic equations)
  • Equation of circle (*Draw if you don't understand the question)
  • Trigonometry R formula
  • The Hence concept (Differentiation & Integration combined)
  • Partial Fraction & Integration
  • Properties of Integral
  • Differentiation & Integration of exponential function and ln function
  • Differentiation: Eqn of Tangent & Normal
  • Coordinate Geometry
  • Equation of circle
  • Binomial Expansion
  • Linear Law

I would be expecting cross-chapters questions on Monday. Just like you, I'm a candidate so the above list is just my suggestion.

All the best for the final Maths paper. See you at the finishing line.

PS: Don't worry about bell curve! It's beyond our control!