I dont even know how to put integration signs on this someone help, this is ridiculous lol
Mar 13, 2008 #1 n77ler 89 0 I dont even know how to put integration signs on this someone help, this is ridiculous lol Last edited: Mar 13, 2008
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Mar 13, 2008 #2 tiny-tim Science Advisor Homework Helper 25,789 249 Do you mean you want to type [tex]\int_a^b[/tex] ? If so, you just type [noparse][tex]\int_a^b[/tex][/noparse].
Do you mean you want to type [tex]\int_a^b[/tex] ? If so, you just type [noparse][tex]\int_a^b[/tex][/noparse].
Mar 13, 2008 #3 rocomath 1,750 1 Introducing LaTeX Math Typesetting - https://www.physicsforums.com/showthread.php?t=8997
Mar 13, 2008 #5 n77ler 89 0 Nvm I cant even write the integral sign im not going to show all my workings Last edited: Mar 13, 2008
Mar 13, 2008 #6 n77ler 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: Mar 13, 2008
[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?
Mar 13, 2008 #7 tiny-tim Science Advisor Homework Helper 25,789 249 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. 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: May 3, 2017
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. 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]
Mar 13, 2008 #8 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.
[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.