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

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Sec. 1]_Number Series_303<br />

-<br />

V r(2-Q + l 1"<br />

[<br />

fa<br />

[n(3-20-3ij '<br />

2493. Between the curves {/ = -? and y=-^ and to the right<br />

X X<br />

of their po<strong>in</strong>t of <strong>in</strong>tersection are constructed to<br />

segments parallel<br />

the t/-axis at an equal distance from each other. Will the sum<br />

of the lengths of these segments be f<strong>in</strong>ite?<br />

2494. Will the sum of the lengths of the segments mentioned<br />

<strong>in</strong> Problem 2493 be f<strong>in</strong>ite if the curve \)^-\ is replaced by the<br />

x<br />

curve y = ?<br />

X<br />

2495. Form the sum of the series ^-^ and<br />

Does this sum converge?<br />

and<br />

QC<br />

2496. Form the difference of the divergent series ]T 2<br />

n i<br />

rt<br />

anc* * es * '* for convergence.<br />

2497. Does the series formed by subtract<strong>in</strong>g the series<br />

00<br />

sef i TT -f<br />

es 21 converge?<br />

n = i n i<br />

2498. Choose two series such that their sum converges while<br />

their difference diverges.<br />

00<br />

00<br />

CC QC<br />

2499. Form the product of the series V<br />

~nVn<br />

and V.OTTMntt<br />

2<br />

Does this product converge?<br />

2500. Form the series +1 + 1+ .. . + . J~-f- . . V.<br />

(l<br />

Does<br />

this series converge?<br />

2501. Given the series 1+1 1+ ...+ ( -:<br />

^+... Estimate<br />

the error committed when replac<strong>in</strong>g the sum of this series with<br />

the sum of the first four terms, the sum of the first five terms.<br />

What can you say about the signs of these errors?<br />

2502*. Estimate the error due to replac<strong>in</strong>g the sum of the<br />

series<br />

y + 2! (2") + ~3\('2J + " + 5H2") +"<br />

by the sum of its first n terms.<br />

r

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

Saved successfully!

Ooh no, something went wrong!