The fundamental theorem of calculus specifies the relationship between the two central operations of
calculus,
differentiation and
integration.The first part of the theorem, sometimes called the first fundamental theorem of calculus, shows that an
indefinite integration can be reversed by a differentiation.The second part, sometimes called the second fundamental theorem of calculus, allows one to compute the
definite integral of a function by using any one of its infinitely many
antiderivatives. This part of the theorem has invaluable practical applications, because it markedly simplifies the computation of definite integrals.
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