Nanyang Junior College — H2 Math prelim questions & solutions
Nanyang Junior College · Paper 1Argand geometry: rhombus from equal moduli, arg of sum, and reflecting a point in OP.Nanyang Junior College · Paper 1Expand cos(t^3), integrate term by term, then verify the integral exactly via sin(x^3).Nanyang Junior College · Paper 1Prove a right angle using dot products and find a triangle's area via cross product.Nanyang Junior College · Paper 2Conjugate-pair roots of an imaginary-coefficient cubic, then x to -x substitution for the related cubic.