INTEGRAL

Page 1

INTEGRAL Jika f(x) adalah fungsi yang differensiabel maka  f ' ( x ) dx adalah f (x )  c

A. Rumus Dasar 1.  x n dx  n 1 1 x n 1  c dengan

      

2. 3. 4. 5. 6. 7. 8.

1 dx  x

n  1

x 1 dx  ln x  c

sin xdx   cos x  c cos xdx  sin x  c sec 2 xdx  tan x  c csc 2 xdx   cot x  c sec x. tan xdx  sec x  c csc x. cot xdx   csc x  c

B. Integral tentu Jika  f ( x )dx  g( x )  c maka b

b

a

a

 f ( x )dx  g(x )  g(b)  g(a ) C. Sifat-sifat integral 1.  f ( x )  g ( x ) dx   f ( x )dx   g ( x )dx 2.  f ( x )  g( x ) dx   f ( x )dx   g( x )dx 3.  kf ( x )dx  k  f ( x )dx b

a

  f ( x )dx   f ( x )dx

4.

a

b

b

c

c

a

b

a

 f ( x )dx   f ( x )dx   f (x )dx

5.

a

 f ( x )dx  0

6.

a

y = f(x)

D. Menghitung luas daerah y = f(x)

a

y = g(x)

b x

x=a a

b b

L=  f ( x )dx a

Irvan Dedy

y = f(x)

x

x=b

b

b

L=   f ( x )dx

L=

 f ( x )  g(x )dx a

a

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E. Volume Benda Putar y

y = f(x) a

b

x

b

x = f(y) b

b

v =   y dx 2

a

v =   x 2 dy a

a

F

Integral Parsial

 udv  uv   vdu

Irvan Dedy

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