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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: [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) When When Coordinates are (ii) KS Comments: Some students wasted [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) Differentiating the given equation by , (ii) Tangent parallel to [...]

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) (ii) KS Comments: Formulas!!! Every simple questions involving formulas!

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions. (i) (ii) Since the first two terms are equal, Third term KS Comments: [...]