View: 4958|Reply: 13
|
TeKa - TeKi MaTheMaTiCs
[Copy link]
|
|
pnh dgr x teka teki ni...ade member soal td
ahmad seorang yang miskin.. die xde duit..die nak beli baju.. tapi bajutu harga RM50.. Die pinajam dengan A RM25 dan B RM25 jadi la RM50..so,die pegi la nak beli baju tu.. masa die pegi,die tengok baju tuSALE. baju tu sekarang berharga RM45.. die bayar then die dapat bakiRM5.. die bg kawan A RM1 dan B RM1.. jadi,baki die tinggal RM3.. diehutang kawan die A RM24 dan B RM24.. so,die hutang RM48.. die ada RM3sekarang.. RM48+RM3=RM51 :-kenapa boleh ada RM51,sedangkan die pinjamRM50??
huhu...ade sape tau jwpn nye x? huhu, confusing :hmm: :gila:
korg kt thread ni mesti terrer bab2 cegini kn ....so, ble tlg aku
[ Last edited by guynextdoor at 22-5-2007 07:37 PM ] |
|
|
|
|
|
|
|
huhu.. boleh bukak skim investment internet nie... mesti ramai confuse... |
|
|
|
|
|
|
|
Reply #1 babyorange's post
Dia sebenarnya masih berhutang RM 48 ringgit dengan kawan2 dia....sebab:
1.RM 45 dah dibayar untuk baju
2.Kemudian,dia dapat baki RM 5
3.Dia bayar DARI,diulangi...DARI RM 5 itu, RM 2 kepada kawannya,
4.Maka dia ada baki RM 3 lagi.
5.Harga baju(RM 45) + duit RM 3 =RM 48...dan inilah jumlah hutang sebenar yang masih tinggal..
6.Dia masih hutang RM 48.
Jadi sebetulnya,hutang= RM 45 + RM 3=RM 48 |
|
|
|
|
|
|
|
Reply #3 prototaip's post
yep aku sokong...dia berhutang 45 je...bukannya 50....
sbbnya daripada duit 50 tu...
dia gunakan 2 ringgit utk bayar hutang....so baki hutang 48
yg jadi masalah...sbbnya duit yg dia pinjam tu dia guna utk bayar balik hutang...kiranya...
dia tak kuar duit dia langsung....dia pulangkan aje duit kwn dia tu...
tu je |
|
|
|
|
|
|
|
satu teka teki yang munasabah dan baik.... |
|
|
|
|
|
|
|
confuse sebab cara kira salah
|
|
|
|
|
|
|
zed2jay This user has been deleted
|
wuarghh..confuse! confuse! baca jawapan lagi tambah confuse! |
|
|
|
|
|
|
|
Reply #8 zed2jay's post
ko nie mmg konfuis ler..... |
|
|
|
|
|
|
|
Dia hutang RM50 sebab nak beli baju harga RM50. Lepas tu penjual baju bagi dia RM5 lagi (dalam bentuk diskaun). So acuali, dia dapat RM55 semernya. Bila dia bayar harga baju dia ada duit lebih kat tangan RM5 dan dia bayar kawan dia A & B RM1 sorang. Jadi tinggallah RM3 kat dia... |
|
|
|
|
|
|
|
Haha, silap kire jer yg first2 tuh... |
|
|
|
|
|
|
|
Reply #12 meitantei's post
mencuba2 sahaja,
permudahkan dgn menggunakan no. complex;
nombor complex; i = sq root (-1) --------(1)
sq root (1)/ sq root (-1) = (-1) / sq root(1) ------(2)
menggunakan (1) ke dlm (2)
didapati;
sq root (1) / i = i / sq root (1) ---------(3)
jelasnya; sq root (1) = 1 ---------(4)
jadi (4)
1/i = i/1
atau; 1/i = i
maka persamaan di atas tak boleh disamakan, memandangkan 1 bahagian dr i tak mungkin sama dgn i. |
|
|
|
|
|
|
|
Let a and b be positive real numbers. Then
sqrt(a*b) = sqrt(a)*sqrt(b), and
sqrt(a/b) = sqrt(a)/sqrt(b).
However, if a or b is negative, then the above rules does not hold.
For example, consider the equation sqrt(1)/sqrt(-1) = sqrt(-1)/sqrt(1) in the original post. Since i^2 = -1, we have
LHS: sqrt(1)/sqrt(-1) = sqrt(1)/ i = [sqrt(1)*(-i)] / [i*(-i)] = -i.
RHS: sqrt(-1)/sqrt(1) = i.
This is true for both sqrt(1) = 1 or -1.
In conclusion, the equation highlighted above used in the proof in the original post is wrong.
[ Last edited by reinloch at 1-6-2007 10:22 AM ] |
|
|
|
|
|
|
| |
Category: Belia & Informasi
|