Differentiation Question #1

Given that , find the approximate percentage change in when increases from 2 by 2%.  

Probability Question #4

A gambler bets on one of the integers from 1 to 6. Three fair dice are then rolled. If the gambler’s number appears times (), he wins latex k1. Calculate the gambler’s expected winnings

Random Sec 4 Differentiations

B6 let Sub to Thus, it is a min point. C7 let (NA). There are no stationary points for this curve. C8 Let Evaluate with a calculator…

A little reminder to students doing Calculus now

When , it implies we have a stationary point. To determine the nature of the stationary point, we can do either the first derivative test or the second derivative. The first derivative test: [...]

Vectors Question #2

If , where , and are all non-zero vectors, show that bisects the angle between and .

2016 A Level H2 Physics (9646) Paper 1 Suggested Solutions

All solutions here are SUGGESTED. Casey will hold no liability for any errors. Comments are entirely personal opinions. B C B D D C D D B C A D D C C A D A B D Question 21 is a flawed question. [...]

Random Questions from 2016 Prelims #12

HCI/1/6 A group of boys want to set up a camping tent. They lay down a rectangular tarp OABC on the horizontal ground with OA = 3 m and AB = 1.5 m and secure the points D and E vertically above O [...]

2016 A-level H1 General Paper (8807) Paper 1 Suggested Solutions

All solutions here are SUGGESTED. Christine will hold no liability for any errors. Comments are entirely personal opinions. Read more about Christine’s Pre-A’levels 2016 thoughts [...]

Problem Solving Tips #1

So these past months, I have been focusing on harnessing students’ abilities to interpret questions properly. Every line in a question is there for a reason and hold little pieces of information. [...]

2015 A-level H2 Mathematics (9740) Paper 2 Question 12 Suggested Solutions

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) Let X and Y denote the mass of a apple and pear in grams [...]