29.01.2013 Views

Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

168 Def<strong>in</strong>ite Integrals \Ch. 5<br />

1718. F<strong>in</strong>d the area of the surface (called a catenoid) formed<br />

by the rotation of a catenary # = x = to x = a.<br />

acosh about the x-axis from<br />

1719. F<strong>in</strong>d the area of the<br />

3<br />

x'/'-i /'/ -a<br />

surface of rotation of the astroid<br />

3 3<br />

' about the y-axis.<br />

1720. F<strong>in</strong>d the area of the surface of rotation of the curve<br />

y In (/about the *-axis from y=\ to y = e.<br />

2<br />

JC =<br />

-^/<br />

1721*. F<strong>in</strong>d the surface of a torus formed by rotation of the<br />

circle x* + (y b) 2<br />

^=a* about the *-axis a).<br />

1722. F<strong>in</strong>d the area of the surface formed by rotation of the<br />

ellipse ^+^ = 1 about: 1) the *-axis, 2) the y-axis (a>6).<br />

1723. F<strong>in</strong>d the area of the surface formed by rotation of one<br />

arc of the cycloid x = a(t s<strong>in</strong>/) and r/ = a(l cos t) about: a) the<br />

x-axis, b) the y-axis, c) the tangent to the cycloid at its highest<br />

po<strong>in</strong>t.<br />

1724. F<strong>in</strong>d<br />

the j^-axis, of<br />

the area of the<br />

the cardioid<br />

surface formed by rotation, about<br />

x = a (2 cost cos 2/), \<br />

t/ = a(2s<strong>in</strong>/ s<strong>in</strong>2/). /<br />

1725. Determ<strong>in</strong>e the area of the surface formed by the rotation<br />

of the lemniscate r 2 = a 2<br />

cos2

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!