Sir Isaac newton. He and Leibniz both invented the calculus independently.
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calculus in the vesicle
It was made independently by Sir Isaac Newton (English) and Gottfried Wilhelm Leibniz (German).
If df(x)/dx = g(x), then integral [from a to b] g(x) dx = f(b)-f(a). In plain English: the definite integral can be calculated by finding the antiderivative, evaluating it at the endpoints, and subtracting.
It is a curve described by the polar equation: r= 1+2sin(φ/2), (note the 2 in front of sine) named after and English mathematician T. J. Freeth (1819-1904) which first appeared in a paper he published in the London Mathematical Society in 1879. It is considered an extention of Freeths strophoid which is generalized by the equation: r= a[1+bsin(φ/2)] See also information at: http://mathworld.wolfram.com/FreethsNephroid.HTML
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