Integrals and area

Integrals and area

Postby Guest » Fri Jun 19, 2020 11:33 am


I am struggling with one homework excersise, could someone help me?
[tex]\begin{cases} x=3(t-sint) \\ y=3(1-cost) \end{cases}[/tex]
[tex]y\ge 4,5[/tex] and [tex]0>x>2 \pi 3[/tex]

as far as i know i can make this equation, but math teacher said that there are still some problems with the excersise
[tex]S= \int\limits_{0}^{2\pi3} 3(t-sint)3(1-cost)dt[/tex] or just replace [tex]2\pi3[/tex] with [tex]6\pi[/tex]

Re: Integrals and area

Postby HallsofIvy » Sat Jul 18, 2020 1:53 pm

Well, what, exactly, is the problem? Please go back and read it again! Is it possible that your "[tex]3\pi 2[/tex]" is actually [tex]3\pi/2[/tex]? And what are you to do with x and y? What you have written appears to be [tex]\int xy dt[/tex] which would be very peculiar.

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