Chayanika , 07 Feb 2018
First off, don't depend on NCERT especially for maths. The standard of maths in NCERT is significantly low to allow commerce students to understand concepts such as calculus and algebra. For calculus, Amit M Agarwal is a decent choice. You will be able to attempt calculus from both Mains and Advanced after studying from Agarwal's book. It is an Arihant publication. For Algebra, I found Tata Mcgraw Hill books to be very conclusive and precise. S.L Loney remains the standard for Coordinate Geometry. Finally for Vector & 3-D, NCERT and RD Sharma are enough.