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zadania całki
1. Metoda podstawienia
5 + 2
,
+ + 2
=
1 1 1
= = " = +" " = = +
3 =
3 3 3 3
=
3
5 + 2 1
+ + 2 =
| |
= = = " = ln = ln + + 2 +
=
+ + 2
2. Przez części
" cos , "
+" +"
= ! = 1
" cos = = " sin - 1 " sin = sin - =
= cos ! = sin
= sin + cos +
= ! = 1
" = = " - 1 " = " - = " - =
= ! =
= - 1 +
3. Rozkład na ułamki proste
2 + 3 4
,
+ - 2 + 2 + 1
5 1
2 + 3 5 1 1 1 5 1
3 3
| | | |
= + = + = ln - 1 + ln + 2 +
+ - 2 - 1 + 2 3 - 1 3 + 2 3 3
2 + 3 + 2 + - 1 + 2 + - + + 2 -
= + = = =
+ - 2 - 1 + 2 - 1 + 2 - 1 + 2 - 1 + 2
+ = 2 = 2 - = 2 - = 2 - =
! ! ! !
2 - = 3 2 - 2 + = 3 3 = 5 = =
" = 1 + 8 = 9; "" = 3
-1 + 3 2
= = = 1
2 2
-1 - 3 4
= = - = -2
2 2
+ 1 =
= + = 4 = = 4 =
+" +" +" +" +"
1 =
4 4
= 4 " = - = - +
-1 + 1
4 4 + 1 + + +
= = + = =
+ 2 + 1 + 1 + 1 + 1 + 1 + 1
= 0 = 0
!
+ = 4 = 4
" = 4 - 4 = 0
-2
= = -1
2
4. Oblicz całki
arccos
+"
1
= arccos ! = -
arccos = 1 " arccos = =
"1 -
= 1 ! =
1 - =
1
-2 =
-1
2
" arccos - " = arccos + = = arccos - =
"1 - "1 - = - "
2
1 1
= arccos - = arccos - = arccos - "
= arccos - - +
1
1
2 2
"
2
" " + 2
+"
+ 2 =
3 =
1 1 2 2
" + 2 = = " = " = = = + 2
" "
= 3
3 3 3 9 9
3
2
+"
1
= + + 1 + = + + + ln | - 1| +
- 1 - 1 3 2
1
: - 1 = + + 1 +
- 1
- +
- - - -
- +
- - - -
- + 1
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