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and

da

(18) Son deine = 3 tan-1 (s tango +9).

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Integration by parts often decomposes a function into an integrated part and one easily integrated. The general formula is

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Sale e = 10 - Jde o de un (1) da " - ( - )

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If be a rational fraction, in which the numerator is of lower dimensions than the denominator, it may always be decomposed into a sum of simpler fractions differing according to the form of V. V may consist of factors of the forms 1. ra,

II. (x – a)”, III. NP + ax + b, IV. (x2 + ax + 6)". 1. To every factor of the form x a corresponds a

M partial fraction of the form –

N-, where

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