Is it a problem not to take higher mathematics?

Not at SSC, but it shows in class 11 — college mathematics and physics move on from these concepts.

Is it harder than general mathematics?

Different rather than harder. It leans on concept over computation, so students who like understanding why often find it easier.

Which chapter needs the most time?

Coordinate geometry and functions — the most abstract two, and the concepts do not settle without drawing them.

Class 9-10 Higher Mathematics Book

বাংলায় পড়তে চাও? দেখো: নবম-দশম শ্রেণির উচ্চতর গণিত বই

Higher mathematics is optional, so many treat it as extra weight. In fact it lays the foundation for class 11 physics and mathematics, and students who take it seriously struggle far less on entering college.

How it differs from general mathematics

General mathematics emphasises computation and application; higher mathematics emphasises concept and abstraction. Sets and functions, polynomials, coordinate geometry, equations, trigonometry and probability appear here, and return in class 11 under almost the same names — deeper.

Download the book

The textbook for the science group’s optional subject.

The Bangla version and the English Version are different books — download the one matching your medium.

Why neglecting it is expensive

Class 11 mathematics and physics stand on these concepts.
Engineering and science admission tests revisit these chapters.
The optional subject’s marks count by a separate rule in the result.
A weak base here is much harder to repair once you are in college.

How to approach the chapters

This book carries more definitions and theorems, so writing the concept in your own words first pays off — a concept you cannot write is one you have not understood. Then work the examples, then the exercises. In coordinate geometry and functions, drawing is close to essential, because those two are the most abstract.