oke, pelan" yah jelasinnyaOriginally Posted by Primavera
semuaa
ga diajarin soale
ini nih , ada soalnyaa .
Spoiler untuk pektor :
kalo sudut BAC, berarti kita ngitung sudut antara vektor AB dan vektor AC (kita anggep sudut diantaranya = X)
dengan A, B, C yg diketahui, maka:
AB = B-A = (6-2), (2-2), (3-2) = 2, 0, 1
AC = C-A = (1-2), (7-2), (6-2) = -1, 5, 4
nah, karena cos X = (AB.AC)/ |AB||AC|, jadi:
|AB| = (2^2 + 0^2 + 1^2)^1/2 (diakar maksudnya)
|AC| = ([-1]^2 + 5^2 + 4^2)^1/2 (diakar juga)
AB.AC = (2.[-1] + 0.[-5] + 1.4)
terus ketemu kan cos X nya berapa...abis itu dapet deh sudutnya
-
17-03-11, 21:14 #856
- Join Date
- Jun 2008
- Location
- Unseen Horizon
- Posts
- 8,965
- Points
- 30,120.80
Thanks: 298 / 586 / 409
+Personal Corner | Lunatic Moe Anime Review
+My Story INDEX
+GRP/BRP Formula | IDGS Newbie Guide
The moment you say a word of parting, you've already parted.
So long as you and I are both somewhere in this world, we haven't parted.
So long as you don't say it, you haven't parted.
That is the way of the world:
The Law of Linkage.
Shichimiya Satone - Sophia Ring S.P. Saturn VII
-
17-03-11, 21:15 #857
- Join Date
- Jan 2009
- Location
- 大阪
- Posts
- 4,485
- Points
- 11,864.76
Thanks: 203 / 324 / 225
udah2 sekarang fokus vector matematika dolo Originally Posted by Primavera
itu belajarnya pake program apa ?
mau dong diajarin yang banyakkkk banget
/
“The planet is fine. The people are fucked.”
― George Carlin ―
-
17-03-11, 21:22 #858
- Join Date
- Oct 2010
- Location
- jakarta barat
- Posts
- 3,778
- Points
- 409.78
Thanks: 339 / 152 / 113
pap , jadinya kann . Originally Posted by LunarCrusade
oke, pelan" yah jelasinnya
kalo sudut BAC, berarti kita ngitung sudut antara vektor AB dan vektor AC (kita anggep sudut diantaranya = X)
dengan A, B, C yg diketahui, maka:
AB = B-A = (6-2), (2-2), (3-2) = 2, 0, 1
AC = C-A = (1-2), (7-2), (6-2) = -1, 5, 4
nah, karena cos X = (AB.AC)/ |AB||AC|, jadi:
|AB| = (2^2 + 0^2 + 1^2)^1/2 (diakar maksudnya)
|AC| = ([-1]^2 + 5^2 + 4^2)^1/2 (diakar juga)
AB.AC = (2.[-1] + 0.[-5] + 1.4)
terus ketemu kan cos X nya berapa...abis itu dapet deh sudutnya
cos x = ( AB.AC ) / |AB|.|AC|
jadinyaa .
= ( -4 + 0 + 4 ) / ( 714 )^1/2
= 0 / ( 714 )^1/2
sambil kok Originally Posted by Alter_Ego
udah2 sekarang fokus vector matematika dolo/).gif "hohoho")
/
-
17-03-11, 21:27 #859
- Join Date
- Jun 2008
- Location
- Unseen Horizon
- Posts
- 8,965
- Points
- 30,120.80
Thanks: 298 / 586 / 409
jangan ngarang loe
AB.AC = (2.[-1] + 0.[-5] + 1.4) = -2 + 0 + 4 = 2 (teliti yah...masa loe 2.(-1) = -4?/" )
|AB| = (2^2 + 0^2 + 1^2)^1/2 = (4 + 0 + 2)^1/2 = 2,449
|AC| = ([-1]^2 + 5^2 + 4^2)^1/2 = (1 + 25 + 16)^1/2 = 6,481
berartiiii
cos X = 2/(2,449)(6,481)
cos X = 0.126
X = arc cos 0,126
X = 82,76 derajatLast edited by LunarCrusade; 17-03-11 at 21:30.
+Personal Corner | Lunatic Moe Anime Review
+My Story INDEX
+GRP/BRP Formula | IDGS Newbie Guide
The moment you say a word of parting, you've already parted.
So long as you and I are both somewhere in this world, we haven't parted.
So long as you don't say it, you haven't parted.
That is the way of the world:
The Law of Linkage.
Shichimiya Satone - Sophia Ring S.P. Saturn VII
-
17-03-11, 21:37 #860
- Join Date
- Oct 2010
- Location
- jakarta barat
- Posts
- 3,778
- Points
- 409.78
Thanks: 339 / 152 / 113
Originally Posted by LunarCrusade
oke, pelan" yah jelasinnya
kalo sudut BAC, berarti kita ngitung sudut antara vektor AB dan vektor AC (kita anggep sudut diantaranya = X)
dengan A, B, C yg diketahui, maka:
AB = B-A = (6-2), (2-2), (3-2) = 2, 0, 1
AC = C-A = (1-2), (7-2), (6-2) = -1, 5, 4
nah, karena cos X = (AB.AC)/ |AB||AC|, jadi:
|AB| = (2^2 + 0^2 + 1^2)^1/2 (diakar maksudnya)
|AC| = ([-1]^2 + 5^2 + 4^2)^1/2 (diakar juga)
AB.AC = (2.[-1] + 0.[-5] + 1.4)
terus ketemu kan cos X nya berapa...abis itu dapet deh sudutnya
Originally Posted by LunarCrusade
jangan ngarang loe
AB.AC = (2.[-1] + 0.[-5] + 1.4) = -2 + 0 + 4 = 2 (teliti yah...masa loe 2.(-1) = -4?/" )
|AB| = (2^2 + 0^2 + 1^2)^1/2 = (4 + 0 + 2)^1/2 = 2,449
|AC| = ([-1]^2 + 5^2 + 4^2)^1/2 = (1 + 25 + 16)^1/2 = 6,481
berartiiii
cos X = 2/(2,449)(6,481)
cos X = 0.126
X = arc cos 0,126
X = 82,76 derajat
-
17-03-11, 21:42 #861
- Join Date
- Jun 2008
- Location
- Unseen Horizon
- Posts
- 8,965
- Points
- 30,120.80
Thanks: 298 / 586 / 409
woot benar anda, ternyata nga ada sudutnya
iya gw yg salah itung
(saya gentle ngaku salah 
)
tapi rumusnya bener, yang jelas klo mo cari sudut antara vektor selalu pake itu yah
lanjutkan
gw jg perlu ngasah basic math soalnya...
+Personal Corner | Lunatic Moe Anime Review
+My Story INDEX
+GRP/BRP Formula | IDGS Newbie Guide
The moment you say a word of parting, you've already parted.
So long as you and I are both somewhere in this world, we haven't parted.
So long as you don't say it, you haven't parted.
That is the way of the world:
The Law of Linkage.
Shichimiya Satone - Sophia Ring S.P. Saturn VII
-
17-03-11, 21:42 #862
- Join Date
- Jan 2009
- Location
- pisang
- Posts
- 865
- Points
- 8,879.23
Thanks: 15 / 8 / 6
A (2,2,2) B (6,2,3) C(1,7,6)
vektor AB (4, 0, 1)
vektor BC (-5, 5, 3)
vektor AC (-1, 5, 4)
karena AB.AC = |AB||AC|cos X
(4 0 1)(-1 5 4) = (17^1/2)(42^1/2) . cos X
(-4 + 0 + 5) = (714^1/2) . cos X
1 = (714^1/2) . cos X
(714^-1/2) = cos X
Cos X = 87.855 derajat
benarkah?
===================
EDIT:
walah telat...Kamu tahu otot saya?
-
17-03-11, 21:44 #863
- Join Date
- Jun 2008
- Location
- Unseen Horizon
- Posts
- 8,965
- Points
- 30,120.80
Thanks: 298 / 586 / 409
yg gw bold kacau Originally Posted by Soul_Ripper
bener nga ada sudutnya kok, coba aja gambar
+Personal Corner | Lunatic Moe Anime Review
+My Story INDEX
+GRP/BRP Formula | IDGS Newbie Guide
The moment you say a word of parting, you've already parted.
So long as you and I are both somewhere in this world, we haven't parted.
So long as you don't say it, you haven't parted.
That is the way of the world:
The Law of Linkage.
Shichimiya Satone - Sophia Ring S.P. Saturn VII
-
17-03-11, 21:44 #864
- Join Date
- Oct 2010
- Location
- jakarta barat
- Posts
- 3,778
- Points
- 409.78
Thanks: 339 / 152 / 113
oke papa ! Originally Posted by LunarCrusade
woot benar anda, ternyata nga ada sudutnya
iya gw yg salah itung (saya gentle ngaku salah )
tapi rumusnya bener, yang jelas klo mo cari sudut antara vektor selalu pake itu yah
lanjutkan
gw jg perlu ngasah basic math soalnya...
cari soal lagi dhe
salah masbro . Originally Posted by Soul_Ripper
btw makasih
__________
gini" IQ masalah ketelitianku tinggi lho
-
17-03-11, 21:46 #865
- Join Date
- Oct 2010
- Location
- jakarta barat
- Posts
- 3,778
- Points
- 409.78
Thanks: 339 / 152 / 113
soal lagi .
Spoiler untuk pektor lagi coy :
-
17-03-11, 21:48 #866
- Join Date
- Jan 2009
- Location
- pisang
- Posts
- 865
- Points
- 8,879.23
Thanks: 15 / 8 / 6
permisi kalo mo tanya soal boleh ga? lagi ada problem nih sama soal yg dikasih dari guru saya...
Spoiler untuk soal :
btw makasih buat Lunar ma Primavera, kurang teliti saya... 1 kali empat jadi 5... bisa ga lulus UAS besok..Last edited by Soul_Ripper; 17-03-11 at 21:51.
Kamu tahu otot saya?
-
17-03-11, 21:54 #867
- Join Date
- Jun 2008
- Location
- Unseen Horizon
- Posts
- 8,965
- Points
- 30,120.80
Thanks: 298 / 586 / 409
orthogonal kali maksudnya? Originally Posted by Primavera
ya udah jumlahin aja dulu v + w nya (kita namain x)
x
= v + w
= (1+3)i + j + (1-1)k
= 4i + j
berarti tinggal rumus...
untuk proyeksi orthogonal vektor x pada u = ([x . u]/ |u|^2)u
masuk"in dah
= ([4 0 1].[1 -1 1]/ 1^2+(-1)^2+1^2)[1 -1 1]
= [5/(3^1/2)][1 -1 1]
ya udah berapa deh itu lg males pencet kalkulator
wew bingung gw Originally Posted by Soul_Ripper
sudut D udah pasti 60 derajat...sisanya gw nga tau
Last edited by LunarCrusade; 17-03-11 at 21:57.
+Personal Corner | Lunatic Moe Anime Review
+My Story INDEX
+GRP/BRP Formula | IDGS Newbie Guide
The moment you say a word of parting, you've already parted.
So long as you and I are both somewhere in this world, we haven't parted.
So long as you don't say it, you haven't parted.
That is the way of the world:
The Law of Linkage.
Shichimiya Satone - Sophia Ring S.P. Saturn VII
-
17-03-11, 21:57 #868
- Join Date
- Oct 2010
- Location
- jakarta barat
- Posts
- 3,778
- Points
- 409.78
Thanks: 339 / 152 / 113
wah bijiqmana pula itu . Originally Posted by Soul_Ripper
gatau daku
a
nmbah lagi 1 soal dari soul_ripper .
brb catet
brb catet Originally Posted by LunarCrusade
orthogonal kali maksudnya?
ya udah jumlahin aja dulu v + w nya (kita namain x)
x
= v + w
= (1+3)i + j + (1-1)k
= 4i + j
berarti tinggal rumus...
untuk proyeksi orthogonal vektor x pada u = ([x . u]/ |u|^2)u
masuk"in dah
= ([4 0 1].[1 -1 1]/ 1^2+(-1)^2+1^2)[1 -1 1]
= [5/(3^1/2)][1 -1 1]
ya udah berapa deh itu lg males pencet kalkulator
==========
tapi disoal kok portagonal ya ?
-
17-03-11, 21:59 #869
- Join Date
- Jan 2009
- Location
- pisang
- Posts
- 865
- Points
- 8,879.23
Thanks: 15 / 8 / 6
kok jadi (4 0 1)? bukannya kalo j itu jadi (4 1 0) ? Originally Posted by LunarCrusade
orthogonal kali maksudnya?
ya udah jumlahin aja dulu v + w nya (kita namain x)
x
= v + w
= (1+3)i + j + (1-1)k
= 4i + j
berarti tinggal rumus...
untuk proyeksi orthogonal vektor x pada u = ([x . u]/ |u|^2)u
masuk"in dah
= ([4 0 1].[1 -1 1]/ 1^2+(-1)^2+1^2)[1 -1 1]
= [5/(3^1/2)][1 -1 1]
ya udah berapa deh itu lg males pencet kalkulator
Kamu tahu otot saya?
-
17-03-11, 22:00 #870
- Join Date
- Feb 2009
- Location
- Jakarta/Depok
- Posts
- 11,007
- Points
- 15,295.39
Thanks: 164 / 188 / 154
astaga mtk semua, padahal dulu gw lumayan suka mtk dan nilai gak jelek2 amat, tapi setahun gak sentuh mtk jadi membego
keknya soal UN gak sesusah itu deh/
Everlasting Memories project
When Tsundere's being honest to you, it means she desperately in love with you and that time too she give you her heart, faith, & trust 100%
Reply With Quote
Share This Thread