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INTEGRALI INDEFINITI / ESERCIZI PROPOSTI

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4 M.GUIDA, S.ROLANDO<br />

i*)<br />

l)<br />

m)<br />

n)<br />

o)<br />

p)<br />

q)<br />

r)<br />

s)<br />

t)<br />

u*)<br />

<br />

1<br />

√<br />

e<br />

−2x<br />

− 1 dx..............................................................[arcsin (ex )+c]<br />

<br />

1<br />

dx...........................................................[log |1+logx| + c]<br />

x + x log x<br />

<br />

log x<br />

<br />

<br />

x 4+3log 2 x dx. ................................................... 1<br />

3<br />

4+3log 2 x + c<br />

log x<br />

√ dx. ............................................................. [2 √ x (log x − 2) + c]<br />

x<br />

<br />

<br />

<br />

<br />

<br />

<br />

<br />

sin 2 xdx. ................................................................ x−sin x cos x<br />

2<br />

+ c <br />

<br />

<br />

sin 3 cos<br />

xdx. ..............................................................<br />

3 x<br />

3<br />

− cos x + c<br />

1<br />

dx. ..............................................................[log |tan x| + c]<br />

sin x cos x<br />

1<br />

sin 2 dx. .........................................................[tan x − cot x + c]<br />

x cos 2 x<br />

cos x<br />

<br />

3 − cos 2 x dx. ...................................................... 1√ sin x<br />

2<br />

arctan √<br />

2<br />

+ c<br />

4sinx<br />

4cos 2 dx. .......................................[−2arctan(2cosx − 2) + c]<br />

x − 8cosx +5<br />

<br />

<br />

x<br />

x arctan (1 + 16x) dx..............<br />

2<br />

1<br />

2<br />

arctan (1 + 16x)+<br />

512 log 1+(1+16x) 2 <br />

− x 32 + c<br />

9. Per ciascuna delle seguenti funzioni definite a tratti (continue sul proprio dominio), calcolare tutte<br />

le primitive F (x) e determinare quella che vale 1 in x 0 =0:<br />

⎧<br />

⎨ x +2<br />

<br />

se x1<br />

<br />

log 1+25x<br />

2<br />

se x ≤ 1<br />

c) f (x) =<br />

x log 26 se x>1<br />

<br />

x log 1+25x<br />

2<br />

− 2x + 2 5<br />

arctan 5x + c se x ≤ 1<br />

...................... F (x) =<br />

log 26<br />

2<br />

x 2 + c se x>1 ,c=1<br />

⎧<br />

⎨ 4x +1 se x ≤ 0<br />

d) f (x) = 1<br />

⎩ √ se 0

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