Integrals

1
Table of Standard Integrals 1. Z x n dx = x n+1 n +1 + C (n 6= -1) 2. Z dx x = ln |x| + C 3. Z e x dx = e x + C 5. Z sin x dx = - cos x + C 6. Z cos x dx = sin x + C 7. Z tan x dx = - ln cos x + C 8. Z cot x dx = ln sin x + C 15. Z dx a 2 + x 2 = 1 a tan -1 x a + C 9. Z sec 2 x dx = tan x + C 10. Z cosec 2 x dx = - cot x + C 11. Z sec x dx = ln sec x + tan x + C 12. Z cosecx dx = ln cosecx - cot x + C 13. Z sinh x dx = cosh x + C 14. Z cosh x dx = sinh x + C 17. Z dx a 2 - x 2 = sin -1 x a + C (|x| <a) 16. Z dx a 2 - x 2 = 1 2a ln a + x a - x + C 19. Z dx x 2 + a 2 = sinh -1 x a + C = ln x + x 2 + a 2 + C 0 20. Z dx x 2 - a 2 = cosh -1 x a + C = ln x + x 2 - a 2 + C 0 (x>a) Linearity: Z ( λf (x)+ μg (x) ) dx = λ Z f (x) dx + μ Z g (x) dx Integration by substitution: Z f (u(x)) du dx dx = Z f (u) du Integration by parts: Z f (x)g 0 (x) dx = f (x)g (x) - Z f 0 (x)g (x) dx 18. Z dx = 1 2a ln + C x - a x + a 4. Z + C ln x x 2 - a 2 a x dx = a x

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Integrales reglas

Transcript of Integrals

Table of Standard Integrals

1.

xn dx =xn+1

n + 1+ C (n 6= −1)

2.

dx

x= ln |x| + C

3.

ex dx = ex + C

5.∫

sin x dx = − cos x + C

6.∫

cos x dx = sin x + C

7.∫

tan x dx = − ln∣

∣cos x∣

∣ + C

8.∫

cot x dx = ln∣

∣sin x∣

∣ + C

15.∫

dx

a2 + x2=

1

atan−1

(x

a

)

+ C

9.

sec2 x dx = tanx + C

10.

cosec2x dx = − cot x + C

11.

sec x dx = ln∣

∣sec x + tan x∣

∣ + C

12.

cosecx dx = ln∣

∣cosecx − cot x∣

∣ + C

13.

sinh x dx = cosh x + C

14.

cosh x dx = sinh x + C

17.∫

dx√a2 − x2

= sin−1

(x

a

)

+ C (|x| < a)

16.

dx

a2 − x2=

1

2aln

a + x

a − x

∣+ C

19.∫

dx√x2 + a2

= sinh−1

(x

a

)

+ C = ln(

x +√

x2 + a2

)

+ C ′

20.∫

dx√x2 − a2

= cosh−1

(x

a

)

+C = ln(

x+√

x2 − a2

)

+C ′ (x > a)

Linearity:

(

λf(x) + µg(x))

dx = λ

f(x) dx + µ

g(x) dx

Integration by substitution:

f(u(x))du

dxdx =

f(u) du

Integration by parts:

f(x)g′(x) dx = f(x)g(x) −∫

f ′(x)g(x) dx

18.∫

dx=

1

2aln

∣+ C

x − ax + a

4.∫

+ Cln x

x2 − a2

ax dx = ax

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