Almost certainly -- he developed it himself. He loved his ideas about calculus so much that he fought a bitter battle over whether he should have primacy on its development.
In mathematics, he was the original discoverer of the infinitesimal calculus.
Sir Isaac Newton used algebra in his development of calculus, specifically in the study of limits, derivatives, and integrals. He applied algebraic techniques to solve complex problems in physics and mathematics, laying the foundation for modern calculus.
Sir Isaac Newton is best known for his contributions to the field of physics, particularly his laws of motion and the law of universal gravitation. He also made significant advancements in the study of optics, mathematics, and calculus.
Isaac Newton formulated the laws of motion. These should not be confused with the laws of planetary motion by Keplar
Principally, calculus, although Leibniz had independently discovered the theory. Newton is also credited with the infinite convergent series (showing that there is no exact value for PI), and with Newton's Method, for extracting roots of equations.
Calculus
Newton and Leibniz developed the calculus.
Physics and Calculus.
Sir Isaac Newton.
Isaac Newton and Gottfried Wilhelm Leibniz
He did better than that.He invented it.
He developed a lot of the Calculus that is taught in college.
That 'thing' is called Calculus.
In mathematics, he was the original discoverer of the infinitesimal calculus.
People use calculus today for the weather for example
Sir Isaac Newton. He and Leibniz both invented the calculus independently.
Newton discovered calculus, along with Leibniz. The rest were discovered centuries if not millenia before Newton's birth.