٥륯åĥ
빽֤ޤľʬˤäȵŤޤ
313ڡ 0:14:44 41529

ǺǿؤDz򤭤ޤ
ȡʤȾ£α߸̤顢
Ȥ2ܤηˤʤ롢ȹͤɤΤǤ͡
ɸ 313ڡ 0:22:07 41530
⡼ޥ
5cmľ¤ȤȾߤܤľջѷݷʬѤ4^2ܤǤΤͤ^^;v
4^2*((5/2)^2*-5^2/4)/2=25(-2)=25*1.14=114/4=28.5 cm^2
¨ ^^;v 313ڡ 0:20:26 41531
ǯ
ľ򤹤ϡФʿԤǣ¤飴ܵΥʤΤǡ
ˣ¦ˣ¤ĹΣܡʣ飲ˤҤ̤롣
ܣ£ѣҤϣ٤ʤΤǣ£Ҥľ¤Ȥ߼Ѥ롣
ΤѤȾ£α߼Σ
СݣᣲȽФޤ

313ڡ 0:42:22 41532
Mr.ǥ
ABMȤȤ
AHB=90ꡡHM濴Ȥ룴ʬ1ߤμư
DHưϰϤѤϡ
(5/2)^2*3.144(5/2)^22
BQưϰϤѤϡΡ4^2ܡˤȤƷ׻ޤ
313ڡ 0:33:53 41533

Ⱦ10cm1/410*10*102ľѻѷ
ΤǤ͡
դΤ˻ֳݤꤹ
ӥå 313ڡ 0:42:16 41534
abcba@baLLjugglermoka
ϡ߼ưȤΤ«äݤΤǡ¤鷺ޤ
313ڡ 0:43:40 41535

졩57/2ȿǤ̵
ѤǤäʡ
ӥå 313ڡ 0:51:45 41536

ФϢ
äʬPQ̤Ѥȴ㤤Ƥޤĥȥۥ
䤹ߤʤ
313ڡ 0:53:37 41537
ޥ
57/2ηΥߥǤm(__)mޤ
iMac 313ڡ 0:54:44 HomePage:41538

#41538
ޥ뤵
ѤߤޤǤߤ28.5äƤΤ͡
ӥå 313ڡ 0:57:33 41539

HABľ¤Ȥ룱ߤα߼ʰǼ䤷ƤߤʤƤäϰϤǤȾߤθ̤Ф߼ѤľѡʤξϵաˤOKȤΡˤȸƤޤǻ֤ޤ줵Ⱦ£cmαߤΣΤȤεݷޤǤϡʺǶŤäƤ˰ŻĩǤޤ
Ϻꡡ 313ڡ 1:40:27 MAIL:yokoyama3548@yahoo.co.jp 41540

ĹͤƤȤäǵޤ
ĹʤȤ
(5/2)(5/2)3.14(5/2)(5/2)257/32
Ĺ椬14ˤʤΤ116
ä
(57/32)1657/2
Ȥޤ
魯Ƥ
Tokushima 313ڡ 2:09:23 HomePage:41541
fumio
Ϥ褦ޤ
īϤҤɤᤤƤޤ
ǯ⤦յ٤ߡǯΤȤʤ123֤ûǤ
ǤϤǤϤޤ͡
313ڡ 5:36:14 41542
uchinyan
Ϥˤϡơϡ
ϡعλȤƤ񤷤ǤȤƤɸŪȤƤϰפᡤȤäȤǤ礦
ʴǡ

APBH ʤΤǡH AB O 濴ȤOA = OB = 5/2 cm Ⱦ¤Ȥ߼ˤꡤ
P = B ΤȤ H = BP = C ΤȤ H AC H' ǡH'OAB ʤΤǡ
P B H' ޤǤ O 1/4 θ̤ޤ
ơBHHQ = 13BHBQ = 14 ꡤQ H εפ B 濴 4 ܤФΤǡ
BOBO' = 14 Ȥʤ O'BH'BQ' = 14 Ȥʤ Q'Ȥȡ
O' 濴ȤȾ O'B = OB * 4 = 5/2 * 4 = 10 cm α߼B Q' ޤǤ O' 1/4 θ̤ޤ
ΤϡBQ ̲᤹ʬѤʤΤǡ̲ʬ ݷBQ' ˤʤ뤳Ȥդơ
= O' 1/4 - ľջѷO'BQ' = (10 * 10 * 3.14)/4 - (10 * 10)/2 = 57/2 cm^2
ˤʤޤ
ͥνȡ 313ڡ 13:01:39 MAIL:uchi@sco.bekkoame.ne.jp 41543
uchinyan
ǼĤɤߤޤ
ɽ͡ǤH AB ľ¤Ȥ߼ 1/4 ưȤȤ˹ͤˡΤ褦Ǥ͡
ͥνȡ 313ڡ 13:12:52 MAIL:uchi@sco.bekkoame.ne.jp 41544
M
Ķ줷ߤޤorz
Ҥä֤ƣФκɸʣˤȤ
ȤκɸɽʬѤߤޤ
ǣ0.1ߤ˷׻Ȥΰ֤򥰥դɽ
äȥ᡼Ǥޤ
313ڡ 17:01:40 41545
(Keigei)
ïŦƤޤΤǡҤȤȡ
ʸѤΩ᡼ȥˤʤäƤΤˤʤޤ
ޤֿФפϡֱФפֱĹפ򥤥᡼䤹Ǥ
313ڡ 18:32:43 41546
ڥ륽
߼ѤϤäؤʤǤ
313ڡ 19:24:18 41547

ڥ륽ʤ󤬸ΤϡHQ߸̾ưʬΤȤǤ礦
ʬBQMAM=AB=5cmȤѤơ߼ѲϲǽȻפޤ
߼ѤΤäƤͤ䤹Τϻ¤⤷ޤ
313ڡ 23:10:24 MAIL:taiei@par.odn.ne.jp 41549

Ǥ͡
ʥץǤޤ͡
ӥå 313ڡ 23:18:53 41550
Ϸʼ
ܣȣ¤ľѤʤΤǢȣ¤ϣ¤ľ¤ȤȾߤܤ
ѤФʿԤ¤αĹȤθҤȤ
ѣҤϢȣ¤ǣң¤ľ¤ȤȾߤܤ
黰ѷƣȤʤޤ
ʡ 313ڡ 23:42:56 41551
٥륯åĥ
򤯤ȤڤΤŪʤΤǡϿͤ줾졢ؤȤäƤ̤˹ʤȻפޤ
Ͽ޷դǤʤΤǡ߸̤ˤʤȤǼּޤޤ߸̤ͽۤϤǤ뤱ɡȲ򤤤Ȥˤʤޤ󤫤͡
314ʶ 2:19:26 41552
???
Ѥcm^3ˤʤäƤޤ
314ʶ 10:58:32 41553
ǯ
ν񤭹#41532DZ߼ѤȤޤθ塢Ťޤ
£ѤοľʬȤȥޡȤȡʤǤ#41529٥륯åĥν񤭹ߤޤˡ
ľʬϣ¤αĹǣ¤ΣܤεΥǸ򺹤ˡ
ϤȤСϣ£ѤջѷʤΤǡϣ¡ϣѡ
ΤˡѤϣϣ¡ᣱȾ¤Ȥ߸̤
Ѥ
Ⱦ£ϣ¤αߤѡˡݡʰգϣ¤
Ǥʤ򤱤ȡ

314ʶ 15:11:12 41554
Ȥ
ɸA(-5,0),B(0,0),C(0,5)Ȥ
xmaxima ľAP,QB᤽θ4ܤQѥ᡼aõ

e1:y=a*(x+5)/5$
e2:y=-5*x/a$
solve([e1,e2],[x,y])$
part(%,1)$
solve(4*rhs(part(%o4,1))=x,a)$
solve(4*rhs(part(%o4,2))=y,a)$
rhs(part(%o5,2));5*sqrt(-x/(x+20))
expand(rhs(part(%o6,1)));50/y-5*sqrt(100-y^2)/y
xmaxima sqrt2ǤϤƶy=sqrt(-x^2-20*x)ᤳy=-xȴ֤Ѥx=-10,...,0ޤǤʬǵ
expand((sqrt(-x/(x+20))+sqrt(100-y^2)/y)^2-(10/y)^2)$
solve(expand(part(%,1)^2-(x/(x+20)+1)^2),y)$
integrate(rhs(part(%,2))+x,x,-10,0);25*%pi-50
%pi=3.14Ȥơ25*3.14-50=28.5()
˭ԡ 314ʶ 21:55:59 MAIL:fttnm528@ybb.ne.jp 41555
Ф
פ֤ǤȾߤޤǤäȹԤʤñȻפޤʤ1/4ߤǽǤХ͡
315ڡ 1:08:44 41556
Ф
̼ëĥޤ񤷤Ȥȸä˸ǤǽꤵƤ⤽ʤԻ׵ĤǤϤʤ
ǯ򤤤Ƥߤ飱ϴñ䤬ѥäȲ򤤤3򤱤ΤΤǺǯҤäȤϼʤ󤸤ʤȿۤˤʤäƤޤޤʲޤ
315ڡ 1:15:54 41557
Ф
̼ëĥޤ񤷤Ȥȸä˸ǤǽꤵƤ⤽ʤԻ׵ĤǤϤʤ
ǯ򤤤Ƥߤ飱ϴñ䤬ѥäȲ򤤤3򤱤ΤΤǺǯҤäȤϼʤ󤸤ʤȿۤˤʤäƤޤޤʲޤ
315ڡ 1:15:54 41558
Ф
̼ëĥޤ񤷤Ȥȸä˸ǤǽꤵƤ⤽ʤԻ׵ĤǤϤʤ
ǯ򤤤Ƥߤ飱ϴñ䤬ѥäȲ򤤤3򤱤ΤΤǺǯҤäȤϼʤ󤸤ʤȿۤˤʤäƤޤޤʲޤ
315ڡ 1:15:55 41559
Ф
٤⥯åФƤޤޤ
315ڡ 15:07:22 41560

Фݤ
ڡϡν񤭹󲼤ΡɥڡɤԤäƤ
֥饦Ƥޤޤȡ񤭹ƤƤƤޤޤ

ӥå 315ڡ 22:39:52 41561