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Forming integrals in Latex

  • Thread starter n77ler
  • Start date
89
0
I dont even know how to put integration signs on this someone help, this is ridiculous lol
 
Last edited:

Answers and Replies

tiny-tim
Science Advisor
Homework Helper
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Do you mean you want to type [tex]\int_a^b[/tex] ? :confused:

If so, you just type [noparse][tex]\int_a^b[/tex][/noparse]. :smile:
 
89
0
no there are no boundaries
 
89
0
Nvm I cant even write the integral sign im not going to show all my workings
 
Last edited:
89
0
[tex]\int [/tex]y^7e^y^4dy

let u =y^7, du=y^8/8 dv=e^y^4 let w=y^4, dw=4y^3dy, 1/4dw=y^3dw

v=1/4 [tex]=int [/tex] e^w dw
=(y^7)(1/4e^y^4) - (1/4)(1/8) [tex]\int [/tex] y^8 e^y^4

It doesnt seem like ive made this any simpler at all?
 
Last edited:
tiny-tim
Science Advisor
Homework Helper
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erm … to get
[tex]\int y^7e^y^4dy [/tex]

let [tex]u =y^7, du=y^8/8 dv=e^y^4 let w=y^4, dw=4y^3dy, 1/4dw=y^3dw\,,[/tex]​

type
[noparse][tex]\int y^7e^y^4dy [/tex]

let [tex]u =y^7, du=y^8/8 dv=e^y^4 let w=y^4, dw=4y^3dy, 1/4dw=y^3dw\,,[/tex][/noparse]​

You see, you must put [noparse][tex] and [/tex][/noparse] around the whole of your formula, not just the \int.

And you must always put the \ before the int. :smile:

I suggest you "bookmark":
http://www.physics.udel.edu/~dubois/lshort2e/node61.html#SECTION008100000000000000000 [Broken]
and maybe
http://www.physics.udel.edu/~dubois/lshort2e/node54.html#SECTION00830000000000000000 [Broken]​
 
Last edited by a moderator:
rock.freak667
Homework Helper
6,230
31
[tex]\int y^7e^{y^4} dy[/tex]

Let [itex]w=y^4 \Rightarrow \frac{dw}{dy}=4y^3 \Rightarrow \frac{dw}{4}=y^3 dy[/itex]

[tex]\int y^7e^{y^4} dy \equiv \int (y^4)e^{y^4} (y^3 dy) \equiv \int \frac{1}{4} we^w dw[/tex]


Easier now.
 

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