This part of the whole book comprises the chapters on limit, continuity, differentiation and its applications, conic sections, meanings of eccentricity, showing how they are really sections of cone,circle, properties of triangles, ellipse, parabola, ellipse and hyperbola, tangents and normals in general with particular reference to conic sections, poles, polars, diameters, central conics, asymptotes and envelopes, intersection of conics etc. in the curriculum of CBSE, ICSE and other state councils for +2 level and equivalent courses abroad. This is also fundamental requirement for IITJEE and other entrance exams. The celebrated coaching institutes expect this fundamentals from the students they admit into their institutions.
Some Theorems by Shubhankar Paul
Programs in Java to add and subtract big numbers by Shubhankar Paul
Mathematics by Doge Tarak
Notes On Vector Calculus by narayanadash