NCERT Book for Class 9 Maths: The latest NCERT Class 9 Mathematics Book for the 2025–26 academic session is now available for download in chapter-wise PDF format, in both English and Hindi medium.

1 School of Education, Virginia Tech, Blacksburg, VA, United States 2 Assessment and Institutional Research, Virginia Military Institute, Lexington, VA, United States The primary purpose of this study ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

AlgebraThe algebra section contained a mix of direct and application-based questions. Questions on finding the zeroes of polynomials were straightforward, making this an accessible area for scoring.

Linear functions are used to model a broad range of real-world problems. The ability to solve linear equations and inequalities is an essential skill for analysing these models. This section covers ...

Simultaneous linear equations are used to model situations where two relationships must be satisfied at the same time. These problems often involve two interdependent variables, such as comparing ...

In a major shift approved by its Governing Body, the Central Board of Secondary Education (CBSE) will introduce two-tier difficulty levels – standard and advanced – for science and social science ...

An illustration of a magnifying glass. An illustration of a magnifying glass.

Abstract: We study the linear-quadratic (LQ) control problem on a finite-horizon for linear differential-algebraic equations (DAEs) of arbitrary index. By means of a projection, we derive a ...

The SAT is a standardized test for university admissions worldwide, with a challenging Math section focused on high school concepts like algebra and geometry. Key strategies and official preparation ...

To mathematicians, equations are art. Just as many are moved by a painting or piece of music, to those who appreciate and understand math, expressions of numbers, variables, operations and relations ...