Toronto Math Forum
APM3462012 => APM346 Math => Misc Math => Topic started by: Aida Razi on November 11, 2012, 10:33:08 PM

I am just wondering in this question when P.T. wrote Parseval's equality, it shouldn't contain "integral sin(nÏ€x/l)^2"; Right?

Aida, please next time provide a link, like this one
http://weyl.math.toronto.edu:8888/APM3462011Fwiki/index.php/Home_Assignment_8#5.4.12 (http://weyl.math.toronto.edu:8888/APM3462011Fwiki/index.php/Home_Assignment_8#5.4.12).
I am just wondering in this question when P.T. wrote Parseval's equality, it shouldn't contain "integral sin(nÏ€x/l)^2"; Right?
Yes, except $\int_0^l sin(nÏ€x/l)^2\,dx =l/2$, so you don't need this integral. Ditto for 5.4.13, 5.4.15.
And who is P.T.?

Aida, please next time provide a link, like this one
http://weyl.math.toronto.edu:8888/APM3462011Fwiki/index.php/Home_Assignment_8#5.4.12 (http://weyl.math.toronto.edu:8888/APM3462011Fwiki/index.php/Home_Assignment_8#5.4.12).
I am just wondering in this question when P.T. wrote Parseval's equality, it shouldn't contain "integral sin(nÏ€x/l)^2"; Right?
Yes, except $\int_0^l sin(nÏ€x/l)^2\,dx =l/2$, so you don't need this integral. Ditto for 5.4.13, 5.4.15.
And who is P.T.?
"Paul Tan" Last year student.

Yes, except $\int_0^l sin(nÏ€x/l)^2\,dx =l/2$, so you don't need this integral. Ditto for 5.4.13, 5.4.15.
And who is P.T.?
"Paul Tan" Last year student.
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