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So I have many students coming up to me and saying, “Mr Teng, How do you know which to substitute away or when to introduce when doing simultaneous equations for complex numbers?” [...]

Here is a compilation of all the Combinatorics articles KS has done. Students should read them when they are free to improve their mathematics skills. They will come in handy! 🙂 1. Why is 0! = 1? [...]

Here is a compilation of all the trigonometry articles KS has done. Students should read them when they are free to improve their mathematics skills. They will come in handy! 🙂 1. How to derive [...]

Science Versus Arts- Which is more useful/valuable to society? In pragmatic and materialistic Singapore, science subjects have always taken a greater prominence and value in our society. Science [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. KS Comments:

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) Direction vector of Normal vector of Since is parallel to the normal [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. Total Volume Total Surface Area, Thus, gives a minimum total surface [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) (ii) (iii) (iv) From (iii) Since Thus, locus meets the positive real [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. where k is a positive constant. When Since When When KS Comments: Not a [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) Using GC, (ii) Using GC, Area (iii) Area (iv) Thus, KS Comments: [...]