Unfortunately I couldnt convert the pdf into a picture so that I could upload it but i will try to explain my problem as briefly i can
here is a pdf link btw:
<a target="_blank" title="mathhelplength (pdf)" href="http://pdfcast.org/pdf/mathhelplengt...hhelplength</a>
Right so I am faced with the following problem
"Determine the length of the lograrithmic spiral": x = e^-t * cos t y = e^-t * sin t
0<= t <= 2piI recal a formula
l(length symbol) = $(integral from a to b) SQRT [x'(t)]^2 + [y'(t)}^ dt
I don't know how to evaluate this, could someone show me?
EDIT: New link mathhelplength - PDFCast.org