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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: [...]

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

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. [...]

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 [...]

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 [...]

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. [...]

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 [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) Number of ways ways (ii) Number of ways ways (iii) Number of ways [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) Graph to be inserted (ii) (a) (4 DP) (b) (4 DP) (c) (4 DP) (iii) [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) since A and B are independent. (ii) (iii) If , (maximum) If , (minimum)