CALCULUS Calculus is one of the most powerful and important branches of mathematics. It is the study of change and motion, helping us understand how things grow, move, and interact over time. From predicting the motion of planets to designing modern technology, calculus plays a crucial role in science, engineering, economics, and everyday life. The development of calculus is mainly credited to two great mathematicians of the 17th century: Isaac Newton and Gottfried Wilhelm Leibniz. Although they worked independently, both created the foundational ideas of calculus. Newton developed calculus to solve problems in physics, especially motion and gravity, while Leibniz focused on its mathematical structure and introduced much of the notation we still use today. Calculus is divided into two main branches: differential calculus and integral calculus. Differential calculus deals with rates of change. For example, it helps us calculate speed as the rate at which distance changes over time. The central concept in differential calculus is the derivative, which measures how a function changes when its input changes. This is useful in finding slopes of curves, determining maximum and minimum values, and analysing trends. Integral calculus, on the other hand, focuses on accumulation and the area under curves. The