Isaac Barrow was an English Christian theologian and mathematician who is generally given credit for his early role in the development of infinitesimal calculus; in particular, for proof of the fundamental theorem of calculus. His work centered on the properties of the tangent; Barrow was the first to calculate the tangents of the kappa curve. He is also notable for being the inaugural holder of the prestigious Lucasian Professorship of Mathematics, a post later held by his student, Isaac Newton.
Portrait of Barrow by Mary Beale
Lectiones habitae in scholiis publicis academiae Cantabrigiensis AD 1664
Statue of Isaac Barrow in the chapel of Trinity College, Cambridge
Calculus is the mathematical study of continuous change, in the same way that geometry is the study of shape, and algebra is the study of generalizations of arithmetic operations.
Gottfried Wilhelm Leibniz was the first to state clearly the rules of calculus.
Isaac Newton developed the use of calculus in his laws of motion and universal gravitation.
Maria Gaetana Agnesi
The logarithmic spiral of the Nautilus shell is a classical image used to depict the growth and change related to calculus.