Question

integral

Answer 1

\[\int\limits_{0}^{} \frac{ \cos(2x) dx }{ 9x^2+4 }\]

Answer 2

from 0 to infinity *{infinity is not printed on the integral}*

Answer 3

\[\int\limits_{C}^{}\frac{ e^{i2z} }{ (z+2/3i)(z-2/3i) } dz\]

Answer 4

\[\lim_{z \rightarrow 2/3i}\int\limits_{C}^{}\frac{ e^{i2z} }{ (z+2/3i) }\]

Answer 5

I get \[\frac{ 3 \pi e^{-4/3} }{ 2}\], but the answer is different

Answer 6

http://www.wolframalpha.com/input/?i=cos(2x)%2F(9x%5E2%2B4)+integrate+from+0+to+inf

Answer 7

\[\lim_{z \rightarrow 2/3i}\frac{ e^{i2x} }{ z+(2/3i) }*2*\pi*i\]

Answer 8

^ step 2 in detail

Answer 9

i think your integral is just a tad off

Answer 10

we have this:
\[\Large \int_0^{ + \infty } {} = \frac{1}{2}\int_{ - \infty }^{ + \infty } {} \]

Answer 11

\[\int\limits\limits_0^\infty \frac{e^{2ix}+e^{-2x i}}{ 2} \cdot \frac{1}{(3x+2i)(3x-2i)} dx \\ =\frac{1}{18} \int\limits\limits_0^\infty \frac{e^{2i x}-e^{-2ix}}{(x+\frac{2i}{3})(x-\frac{2i}{3})} dx\]

Answer 12

so if you multiply that result you got by 1/18 you will get wolfram's answer

Answer 13

I agree with @myininaya we have to make this substitution:
\[\Large \cos \left( {2x} \right) = \frac{{{e^{i2x}} + {e^{ - i2x}}}}{2}\]
then we have to go to the complex plane, and we have to apply the theorem of Jordan twice:

Answer 14

How do you sketch the region whose signed area is represented by the definite integral, and evaluate the integral using an appropriate formula from geometry

Answer 15

Let f be an odd function, that is f(-x)=-f(x) . We know that integral 0^5 f(x)=3. Then using properties of definite integrals we conclude that

integral -5^5 f(x)= -3
integral -5^5 f(x)= 0
integral -5^5 f(x)= 2
integral -5^5 f(x)= 3

I'm confused on how to set it up from the integral range they are giving how would this affect the answer?

Answer 16

proff showed us a trick today for trig substitution:
integral of dx/(x^2/16)
we

Answer 17

If n is a positive integer, then lim (n-->infinity) (1/n) [1/(1+(1/n)) + 1/(1+(2/n))+.

Answer 18

If n is a positive integer, then lim (n-->infinity) (1/n) [1/(1+(1/n)) + 1/(1+(2/n))+.

Answer 19

If n is a positive integer, then lim (n-->infinity) (1/n) [1/(1+(1/n)) + 1/(1+(2/n))+.

Answer 20

If n is a positive integer, then lim (n-->infinity) (1/n) [1/(1+(1/n)) + 1/(1+(2/n))+.

Answer 21

If n is a positive integer, then lim (n-->infinity) (1/n) [1/(1+(1/n)) + 1/(1+(2/n))+.

Answer 22

help on integration....??
so basically if i am having equation...as
dx/x=dy
so if we integrate both sides what we are doing.

Answer 23

help me pls. it's our homework in integral calculus.

find the indefinite integral of the ff.

Answer 24

What is a pair of elements that would be expected to form an ionic bond?

Answer 25

What is a pair of elements that would be expected to form an ionic bond?

Answer 26

Dose wood working count as art? Oh well

Answer 27

Looking for some Xbox One folks like me who have Payday 2. I am a infamous III, almost IV.

Answer 28

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Answer 29

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Answer 30

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Answer 31

Which describes an implied main idea?\n\nA strong topic sentence states the main idea of a paragraph.

Answer 32

Both chocolate and commercial cola drinks are popular around the world. The main ingredient in chocolate comes from the beans of the cacao tree, and the fla

Answer 33

There is 8 fish in a tank. 3 fish got sick and died 2 swam away. how many are lef

Answer 34

I'm a snob, I eat corn on the cob until I'm a fat.\nWhat am I?

Answer 35

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