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Created by MSW http://www.nvcc.edu/home/mwesterhoff
Basic Integration Formula Sheet Basic Integration Formulas
Integration Formulas Formulas
Definite (Riemann) Integral
Fundamental Theorem of Calculus I (FTC I) b
0 du = du = 0 du = du = u u + + C C k du = du = ku ku + + C C u u du = du = (for n (for n = −1) n + 1 cos u cos u du = du = sin u sin u + + C C sin u sin u du = du = −cos u cos u + + C C sec u du = du = tan u tan u + C + C sec u sec u tan u tan u du = du = sec u + C + C csc u du = du = −cot u cot u + + C C csc u csc u cot u cot u du = du = −csc u + C + C e du = du = e e + C 1 a du = du = a + C,a > 0 > 0 ln a ln a 1 du = ln |u| + C u 2
Continuity Integrability The Converse is NOT True (see example below)
dx
a
Example: 2
n
f ( f (x) dx = dx = f f ((c)(b )(b
a
i=1
i=1 n
Area of the region bounded by the graph of f , f , x-axis, and x and x = a = a and x = b = b
i=1 n
n
i=1 n
3
2
where r where r i
i=1 n
2
4
30
i=1
Upper and Lower Sums n
I.R. I.R. =
i
i=1
f ( f (mi ) is the min. value of f of f on the subinterval.
n→∞
f (f (M )∆x )∆x i
i=1
f ( f (M i ) is the max. value of f of f on the subinterval.
b
− 1)∆x 1)∆x,
| | = − ln | sec u − tan u| + C
csc u du = du =
− ln | csc u + cot u| + C
Right Endpoints: a + i + i∆ ∆x, for i for i = 1, . . . , n ∆x = (b a)/n
−
du = g (x) dx
⇒ du = du = g g (x)dx, dx,
⇒
g (b)
b
f ( f (u) du
⇒
a
g(a)
a
a
b
n
b
c
a
b
a
b
i−1
i
a
i=1
n
b
c
b
i
a
a
0
a
b
i−1
i=1
b
b
2
b
a
a
b
a
b
sec u du = du = ln sec u + tan u + C
f ( f (x) dx
f ( f (g(x))g ))g (x) dx
a
a
a
Left Endpoints: a + (i (i for i for i = 1, . . . , n
b
a
f ( f (u) du 1. f ( f (x) dx = dx = 0 Numerical Integration 2. f ( f (x) dx = dx = − f ( f (x) dx f x + x + x Midpoint Rule: Rule: f ( f (x) dx ≈ ∆x 2 3. f ( f (x) dx = dx = f ( f (x) + f ( f (x) dx f (f (x ) + f + f ((x ) Trapezoidal Rule: Rule : f ( f ( x ) dx ≈ ∆x 2 4. kf ( kf (x) dx = dx = k k f ( f (x) dx b − a Simpson’s Rule: Rule: f ( f (x) dx ≈ [f ( f (x ) + 4f 4 f ((x )+ 3n 5. [f ( f (x)dx ± g(x) ± · · · ± k (x)] dx )] dx = 2f ( f (x ) + 4f 4 f ((x ) + · · · + 4f 4f ((x ) + f + f ((x )] f ( f (x) ± g(x) dx ± · · · ± k(x) dx 6. 0 ≤ f ( f (x) dx for dx for f non-negative f non-negative 7. If f ( f (x) ≤ g( g (x) ⇒ f ( f (x) dx ≤ g (x) dx 8. If f f is an even function, then f ( f (x) dx = dx = 2 f ( f (x) dx a
n
C.R. C.R. = lim lim
−a
Let u Let u = g = g((x), then
i
b
f (f (m )∆x lim lim )∆x
n→∞
i=1
i
Properties of Integration
− 1)
b
a
∈ [x [ x −1 , x ]
+ 3n 3n
1
i
n→∞
2
f ( f (c) =
Substitution Method for Integration
b
f (f (r )∆x )∆x = f ( f (x) dx
Area Area = lim lim
2
− a), where c where c ∈ [a, [a, b]
Average Value of a Function on [ on [a, a, b]
Area of a Region in a Plane
n
c = cn = cn i = n( n (n + 1) 2 i = n(n + 1)(2n 1)(2n + 1) 6 i = n (n + 1) 4 i = n(2n (2n + 1)(n 1)(n + 1)(3n 1)(3n
f ( f (t) dt = f = f ((u)u (with chain rule)
b
x dx = dx = 1
0
f ( f (t) dt = f = f ((x)
Mean Value Theorem for Integration
2
1
x
d
u
= a + a + a + . + . . . + a + a
− F ( F (a)
a
i=1
Summation Formulas Formulas n
f ( f (x) dx = dx = F F ((b)
a
i
⇒
cot u du = du = ln sin u + C
| | = − ln | csc u| + C
i
i
+ C
a
b
f (f (c )∆x )∆x = f ( f (x) dx
Partitions of equal width:
2
√ = arcsec a u u2 − a2
n+1
n
u
du √ a − u = arcsin ua + C du 1 u = arctan + C a + u a a du 1 | u|