Hello dear aspirant.
No for the case of engineering mathematics you have to solve questions and it is sufficient.
But in many formulas there is derivation also that's because it is having some practical application and uses further in your engineering career. Like Laplace transformation fourior and application of derivatives etc. So you have to go through them properly.
Ok good luck.
College Comparison based on Courses, Placement, Rank, Fee
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile