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maxpayne_lhp
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SOme help with intergration by parts, please
1. Find: [tex] \int e^x cos (x) dx [/tex]
I tried using integration by parts - what we are working on... all these 3 possibilities:
[tex] u = cos x, u= e^x, u = e^x cos(x) [/tex]
And the [tex] \int vdu [/tex] are, respectively:
[tex]1. \int e^x sin(x) dx
>> 2.\int sin(x) e^x dx
>> 3.\int x e^x cos(x) dx [/tex]
which won't work out very well... Please give me a suggestion.
Thanks :)
PS: I don't know how to start a new line in the coded body :S srry
1. Find: [tex] \int e^x cos (x) dx [/tex]
The Attempt at a Solution
I tried using integration by parts - what we are working on... all these 3 possibilities:
[tex] u = cos x, u= e^x, u = e^x cos(x) [/tex]
And the [tex] \int vdu [/tex] are, respectively:
[tex]1. \int e^x sin(x) dx
>> 2.\int sin(x) e^x dx
>> 3.\int x e^x cos(x) dx [/tex]
which won't work out very well... Please give me a suggestion.
Thanks :)
PS: I don't know how to start a new line in the coded body :S srry