If we got 1300 maths formula only then i cannot explain about your happy. These all 1300 formula is managed by Alex Svirin, Ph.D. He is the mathematician and he managed very well in book 1300 maths formula. It is easy for remembering and understanding. Contents: Number Sets * Algebra * Geometry * Trigonometry * Matrices and determinants * Vectors * Differential Calculus * Integral Calculus * Differential Equation * Series * Probability.