Alex Gotev – Dispense di Analisi 1
Tabella degli integrali
∫
f x integrale F x primitiva∫
f x integrale F x primitiva∫
x dx x22 c∫
±1
1−x2dx{
±arcsin x c∓arccos x c
∫
a dx ax c∫
1
x2−1dx log∣
x
x2−1∣
c∫
axdx log aax c∫
1axdx − a−x
log a c
∫
xx21dx 1
2log∣x21∣ c
∫
1xndx −n−1
xn−1 c
∫
a⋅xndx a⋅xn1n1 c∫
1ax2dx a0 1
aarctanx
a c∫
1xdx log∣x∣c∫
11−x2dx 1
2log
∣
1 x1− x∣
c∫
1xdx 2
x c∫
1
1x2dx{
arcSh x clog
x
1x2
c∫
sin x dx −cos x c∫
sin2x dx 12x−sin x cos x c∫
cos x dx sin x c∫
cos2x dx 12xsin x cos x c∫
tan x dx −logcos x c∫
tan x1 dx logsin x c∫
arcsin x dx
1−x2x arcsin x c∫
1
x2±a2 dx log∣
x
x±a2∣
c∫
arccos x dx x arccos x−
1− x2 c∫
x2±a2dx 2xx2±a2±a22logxx2±a2 c
∫
e±k xdx ±e±k xk c∫
1ek xdx −e−k x
k c
∫
1tan2x
dx =∫
1cos2x dx tan x c
∫
cos x1 dx log∣
tan
x24
∣
c∫
1ctg2x
dx =∫
1sin2xdx −ctg x c
∫
sin x1 dx log∣
tan2x∣
c∫
Sh x dx Ch x c∫
a2−x2dx 12
a2arcsinxaxa2−x2
c∫
Ch x dx Sh xc∫
1Ch2x dx =
∫
1−Th2x
dx cTh x c
∫
2xx21dx log x21 c
∫
1x2a2dx 1
aarctanx a c
Alex Gotev – Dispense di Analisi 1
Proprietà
∫
k⋅ f x dx = k⋅∫
f x dx∫
f x g x ... fnx dx =∫
f x dx ∫
g x dx ... fnx dx∫
f x dx = a∫
1a f x dx = 1a
∫
a f x dx =∫
aa f x dx a∈RIntegrali indefiniti riconducibili ad elementari
∫
f x integrale F x primitiva∫
fnx⋅ f ' x dx f n1xn1 c
∫
f ' xf x dx log∣ f x∣ c∫
f ' x ⋅cos f x dx sin f x c∫
f ' x ⋅sin f x dx −cos f x c∫
ef x f ' x dx ef x c∫
af x f ' x dx af xln a c
∫
f ' x
1− f2xdx{
arcsin f x c−arccos f x c
∫
f ' x1 f2xdx arctan f x c
Integrale definito
∫
a b
f x dx = F b − F a =
[
F x ]
abdove F è la primitiva di f(x)
Integrazione per parti Integrale
indefinito
∫
f x g ' x dx = f x g x −∫
f ' x g x dxf(x) va derivata e g'(x) va integrata
Integrale
definito
∫
a b
f x g ' x dx =
[
f b ⋅ g b − f a ⋅ g a ]
−∫
a b
f ' x g x dx
Si integrano per parti funzioni del tipo:
P x ⋅ex P x ⋅sin x P x cos x ex⋅sin x ex⋅cos x
dove P(x) è un polinomio
Integrazione per sostituzione
Integrale indefinito
∫
f h x h ' x dx =∫
f y dyy=h xIntegrale
definito
∫
a b
f h x h ' x dx =
∫
h a h b
f y dy