2

2 + 2 + 1

2 ,

= ln +

2

2 + 2 + 1 =

2 + 2 2

2 + 2 + 1

2 + 2

2 + 2 + 1

2

2 + 2 + 1

2 + 2

2 + 2 + 1 = 2 + 2 + 1 = 2 + 2

2 + 2

2 + 2 + 1 =

= ln +

2 + 2 + 1 = + 1 + 1 + 1 2

2 + 2

2 + 2 + 1 = ln 2 + 2 + 1 +

2 + 2

2 + 2 + 1 = ln + 1 2 +

2 + 2

2 + 2 + 1 = 2 ln + 1 +

2

2 + 2 + 1 = 2

1

2 + 2 + 1

2 + 2 + 1 = + 1 + 1 + 1 2

2 1

2 + 2 + 1 2

1

+ 1 2 = + 1 =

2 1

+ 1 2 = 2

1

2 2 2 2

1

1+ 2

1

+

2 1

+ 1 2 =

2

+ 1+

2

2 + 2 + 1 = 2 ln + 1 +

2

+ 1+

2

2 + 2 + 1 = 2 ln + 1 +

1

+ 1 +

2 + + 1

2 + 1

2 + + 1

2 + 1 =

2

2 + 1 +

2 + 1 +

1

2 + 1

2

2 + 1 =

2 + 1 1

2 + 1

2 + 1

2 + 1

2 + 1

1

2 + 1

2 + 1 = 2 + 1 = 2 =

2

2 + 1

2

1

2

=1

2 ln 2 + 1 +

2

2 + 1 = arctan +

2 + 1 =

1

2 ln 2 + 1 +

1

2 + 1 = arctan +

2 + + 1

2 + 1 = arctan +

1

2 ln 2 + 1 + arctan +

2 + + 1

2 + 1 = +

1

2 ln 2 + 1 +

1

ln

1

ln =

1

ln

1

= ln =1

1

ln

1

=

1

= ln +

1

ln = ln ln +