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On Abel’s Theorem

Choose only one of the following two exercises.

Exercise A. Express the following two elementary indefinite integrals in terms of only rational functions, square roots and logarithms

1.

x3dx x2 3x+ 2, 2.

dx

√x2 3x+ 4.

Hint. For the second integral use the substitution t = (y2)/x, where y is the square root y =

x23x + 4.

Exercise B (if you don’t like calculus). Write a short essay (around one page–in English!) about the life of Niels Henrik Abel.

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