| Math Corner | |
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Jimmou M2 maniac
Jumlah posting : 1609 Age : 35 Lokasi : 马六甲 Registration date : 24.02.07
Character sheet Level: Infinity HP: (99999/99999)
| Subyek: Re: Math Corner Wed Apr 25, 2007 5:06 pm | |
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Angelz88 M2 member
Jumlah posting : 242 Age : 35 Lokasi : Xin jia po Registration date : 03.03.07
| Subyek: Re: Math Corner Wed Apr 25, 2007 5:59 pm | |
| sepi.. da 14 jam nunggu jawaban... ga ada yg mau jawab ... cuma tatsu... hm... pada sibuk exam kah kyk kami2? dikasih permen d yg jawab... (tatsu jgn minta ma wa... bokek ntar wa... ) | |
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Jimmou M2 maniac
Jumlah posting : 1609 Age : 35 Lokasi : 马六甲 Registration date : 24.02.07
Character sheet Level: Infinity HP: (99999/99999)
| Subyek: Re: Math Corner Wed Apr 25, 2007 9:04 pm | |
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Angelz88 M2 member
Jumlah posting : 242 Age : 35 Lokasi : Xin jia po Registration date : 03.03.07
| Subyek: Re: Math Corner Wed Apr 25, 2007 9:14 pm | |
| ... atau jimmou ada soal? dipost aja soalnya... biar isa dikeroyok rame2 | |
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tatsu88 M2 member
Jumlah posting : 420 Age : 35 Lokasi : Singapore Registration date : 03.03.07
| Subyek: Re: Math Corner Wed Apr 25, 2007 11:47 pm | |
| Gw g blh jwb liao ... sianz ... | |
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Jimmou M2 maniac
Jumlah posting : 1609 Age : 35 Lokasi : 马六甲 Registration date : 24.02.07
Character sheet Level: Infinity HP: (99999/99999)
| Subyek: Re: Math Corner Thu Apr 26, 2007 4:20 am | |
| jawab saja, tapi taruh spoiler | |
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Angelz88 M2 member
Jumlah posting : 242 Age : 35 Lokasi : Xin jia po Registration date : 03.03.07
| Subyek: Re: Math Corner Thu Apr 26, 2007 7:38 am | |
| lol... jawab lar bos tatsu... sila dijawab biar yg laen juga isa belajar dari jawaban tatsu :D | |
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tatsu88 M2 member
Jumlah posting : 420 Age : 35 Lokasi : Singapore Registration date : 03.03.07
| Subyek: Re: Math Corner Thu Apr 26, 2007 9:33 am | |
| - Angelz88 wrote:
- 1/p + 1/q = 2/7
tentukan p^2 + q^2 .... 1/p+1/q=2/7 --> (p+q)/pq = 2a/7a, a adalah bilangan real (p+q)^2 = p^2 + 2pq + q^2 (p^2 + q^2) = (2a)^2 - 2x(7a) = (4a^2)-14a (revised from Angelz88) tatsu88
Terakhir diubah oleh tanggal Thu Apr 26, 2007 7:37 pm, total 1 kali diubah | |
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Angelz88 M2 member
Jumlah posting : 242 Age : 35 Lokasi : Xin jia po Registration date : 03.03.07
| Subyek: Re: Math Corner Thu Apr 26, 2007 10:10 am | |
| - tatsu88 wrote:
- Angelz88 wrote:
- 1/p + 1/q = 2/7
tentukan p^2 + q^2 .... 1/p+1/q=2/7 --> (p+q)/pq = 2/7
(p+q)^2 = p^2 + 2pq + q^2 (p^2 + q^2) = 2^2 - 2x7 = -10 tatsu88 tatsu... ada yg kamu lupa... (p+q)/pq = k x 2/7 bukan (p+q)/pq = 2/7 ( kelipatannya juga isa lo ) | |
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Jimmou M2 maniac
Jumlah posting : 1609 Age : 35 Lokasi : 马六甲 Registration date : 24.02.07
Character sheet Level: Infinity HP: (99999/99999)
| Subyek: Re: Math Corner Thu Apr 26, 2007 11:43 am | |
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tatsu88 M2 member
Jumlah posting : 420 Age : 35 Lokasi : Singapore Registration date : 03.03.07
| Subyek: Re: Math Corner Thu Apr 26, 2007 7:36 pm | |
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Angelz88 M2 member
Jumlah posting : 242 Age : 35 Lokasi : Xin jia po Registration date : 03.03.07
| Subyek: Re: Math Corner Thu Apr 26, 2007 8:39 pm | |
| ... ga bole ada 2 k... k atas ama k bawah isa di cancel huehue | |
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Angelz88 M2 member
Jumlah posting : 242 Age : 35 Lokasi : Xin jia po Registration date : 03.03.07
| Subyek: Re: Math Corner Thu Apr 26, 2007 8:40 pm | |
| seharusnya lebih bener diganti jadi 2k / 7n .... ditambah syarat k=n... jadi ga isa dicoret kec sengaja diganti en dicoret en = kurang kerjaan Juz kidding... soal berikutnya silakan dikerjain... eh yg laen post soal donk... mo kerja >< | |
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Jimmou M2 maniac
Jumlah posting : 1609 Age : 35 Lokasi : 马六甲 Registration date : 24.02.07
Character sheet Level: Infinity HP: (99999/99999)
| Subyek: Re: Math Corner Sun Apr 29, 2007 4:38 pm | |
| mau tanya ini gimana kerjakan
Find two unit vectors that are orthogonal to both j + 2k and i - 2j +3k. | |
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Angelz88 M2 member
Jumlah posting : 242 Age : 35 Lokasi : Xin jia po Registration date : 03.03.07
| Subyek: Re: Math Corner Sun Apr 29, 2007 6:39 pm | |
| ... seperti yg uda kita pelajari di basic math ttg vector... vector A dikatakan orthogonal dgn vector B jika sudut yg dibentuk A terhadap B adalah 90 alias perpendicular jadi jika mau cari vektor yg orthognal terhadap ke-2 vector itu tinggal di cross product... cross product masi inget? kasi dikit cth d : i x i = 0 , i x j = k ,... (inget aturan tangan kanan) kalau ga isa pake matriks selesaikan seperti cara mencari determinan dari matriks jadi kita dapet dari cross product hasilnya = +/- (7i + 2j - k) (+ atau - melambangkan direction... karena baik + atau - dari vector itu akan orthogonal dgn kedua vektor yg di-cross product) dan yg ditanya itu unit vector... unit vector itu vector yg magnitudenya = 1 jadi kita tgl bagi dgn V49+1+4 = V54 (berhub ga ada latex jadi V = akar ) hasilnya = +/- (7i + 2j - k)/V54 | |
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Jimmou M2 maniac
Jumlah posting : 1609 Age : 35 Lokasi : 马六甲 Registration date : 24.02.07
Character sheet Level: Infinity HP: (99999/99999)
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tatsu88 M2 member
Jumlah posting : 420 Age : 35 Lokasi : Singapore Registration date : 03.03.07
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Jimmou M2 maniac
Jumlah posting : 1609 Age : 35 Lokasi : 马六甲 Registration date : 24.02.07
Character sheet Level: Infinity HP: (99999/99999)
| Subyek: Re: Math Corner Mon Apr 30, 2007 1:26 am | |
| gak kucek tadi spelling nya.......... | |
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