### Instruction: Who developed calculus and when was it discovered?
### Response: Calculus was discovered in the late 17th century by Isaac Newton and Gottfried Leibniz.  Calculus is also required curriculum in most colleges and high schools if you study mathematics or physics.  Calculus deals with two main concepts - integration and differentiation.  These concepts and formulas in calculus help us understand rates of changes, and areas with respect to time.