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14.3.<br />
14.5.<br />
α+ 1<br />
α x<br />
∫ xdx= + C , α≠−1. 14.4.<br />
α+<br />
∫ cos xdx = sin x + C .<br />
1<br />
∫<br />
= ∫ dx = ln +<br />
x<br />
−1<br />
x dx x C<br />
x<br />
x a<br />
x x<br />
14.7. ∫adx= + C;<br />
∫edx= e + C.<br />
ln a<br />
14.8.<br />
2<br />
∫ cosec xdx =− ctgx + C .<br />
dx 1 x<br />
14.9. ∫ 2 2 = arctg + C .<br />
x + a a a<br />
dx 1 x − a<br />
14.10. ∫ =<br />
2 2 ln + C .<br />
x − a 2a x+<br />
a<br />
2<br />
. 14.6. ∫sec<br />
xdx = tg x + C .<br />
ìåòîä ï³äñòàíîâêè —<br />
( ) = ( ) ( = const)<br />
∫af x dx a∫ f x dx a ;<br />
() = ( ϕ( )) ϕ ′( ) ( = ϕ( ))<br />
∫f t dt ∫ f x x dx t x ;<br />
³íòåãðóâàííÿ ÷àñòèíàìè —<br />
( ) ( ) ( ) ′( ) ( ) ( ) ( ) ′( )<br />
∫uxdvx = ∫uxv xdx= uxvx− ∫vxu xdx=<br />
( ) ( ) vxdux ( ) ( )<br />
= uxvx−∫ .<br />
14.4.8. Âèçíà÷åíèé ³íòåãðàë ³ éîãî âëàñòèâîñò³:<br />
b<br />
b<br />
∫ f( x) dx = ( x) = ( b) − ( a) , ′<br />
( x) = f( x)<br />
;<br />
a<br />
a<br />
b<br />
a<br />
β<br />
( ) = ( ϕ( )) ϕ ′() ( = ϕ() , ϕ( α ) = , ϕ()<br />
β = )<br />
∫f x dx ∫ f t t dt x t a b ;<br />
α<br />
14.11.<br />
∫<br />
dx<br />
2 2<br />
x ± a<br />
2 2<br />
= + ± +<br />
ln x x a C .<br />
b<br />
b b<br />
∫uxdvx ( ) ( ) = uxvx ( ) ( ) −∫ vxdux ( ) ( );<br />
a<br />
a a<br />
dx<br />
14.12. ∫<br />
2 2<br />
a − x<br />
x<br />
= arcsin + C<br />
a<br />
.<br />
dx ⎛ x π ⎞<br />
dx x<br />
14.13. ∫ = ln tg⎜ + ⎟ + C . 14.14. ∫ = ln tg + C .<br />
cos x ⎝2 4 ⎠<br />
sin x 2<br />
14.4.7. Îñíîâí³ âëàñòèâîñò³ ³ ïðàâèëà ³íòåãðóâàííÿ:<br />
′<br />
∫ ∫ ;<br />
( f( x)<br />
dx) = f( x) ; f′<br />
( x) dx = f( x) + C ( C = const)<br />
b a a<br />
( ) ( ) ( ) ( )<br />
∫f x dx =− ∫f x dx a < b ; ∫ f x dx = 0;<br />
a b a<br />
b b b<br />
( ) ± ( ) ⎤ = ( ) ± ( )<br />
∫⎡⎣f x g x ⎦ dx ∫f x dx ∫g x dx;<br />
a a a<br />
b<br />
a<br />
b<br />
( ) = ( ) ( = )<br />
∫kf x dx k∫ f x dx k const ;<br />
b c b<br />
( ) = ( ) + ( )<br />
a a c<br />
a<br />
∫f x dx ∫f x dx ∫ f x dx , a < c < b.<br />
( ) ± ( ) ⎤ = ( ) ± ( )<br />
∫⎡⎣f x g x ⎦ dx ∫f x dx ∫g x dx;<br />
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