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P. 34
Приклад.
x 4 3 4 x 6
dx x 2 x2 3 dx dx
x 2 x2 1 x 2 x2 1
x t 1
x 3 2 x 3 x t p
x 2 x3 2 dx dx dt
3 x 2 x2 1 2
t x 1 dx dt
x 3 2 t 1 3
x 2 x3 2 dt
2
3 t 1 2 t 1 1
x 3 2t 1 x 3 2 1
2
2
x 3x 2 dt x 3x 2 dt 2 dt
3 t 2 3 t t
x 3 1 x 3 2
2
x 2 x3 2 2 ln t C x 3x 4 ln x 1 . C
3 t 3 x 1