Sunday, October 30, 2011

Jawaban Exercise Chapter 3

Kalau menemukan kesalahan, silakan comment ya..
Bagi yang menemukan kesalahan dan komentar untuk pertama kalinya, dapat tambahan nilai ^^

EXERCISE 3.1

1a. {(3, 4)}
1b. {(3, 1)}
1c. {(-2, 1)}

2a. {(2/3, 1/2)}
2b. {(23/7, -23/33)}
2c. {(1/2, 1/4)}

EXERCISE 3.2

1a. (7, 10)
1b. (-11/3, 4/3)
1c. (1, 2)
1d. (-2, -3)

2a. a = -4
2b. a = 2

3. a = 8

4. y = 3x - 1 atau 3x - y - 1 = 0

5. t = 49/2

6. y = x - 1 atau x - y - 1 = 0

7. a = 5

EXERCISE 3.3

1a. {(59/20, -31/20, -3/5)}
1b. {(1/3, 1, 1/2)}
1c. {(-2, -1, 1)}
1d. {(2, 3, 1)}
1e. {(1/5, 2/7, 1/3)}

2. a = 2, b = 3, c = -4
y = 2x^2 + 3x - 4

3. a = -2, b = -2, c = 1
x^2 + y^2 - 2x - 2y + 1 = 0

4. a = 5, b = -12, c = 8

EXERCISE 3.4

1a. {(2, 4), (-1, 1)}
1b. {(1, 2), (-3, 10)}
1c. {(6, 5), (1, 0)}
1d. {(4, 2), (-4, -2)}

2. Ya, di titik (3, 6) dan (1, 2)

3a. tidak punya penyelesaian real
3b. {(0, 0), (-2, -4)}
3c. {(4, -2), (2, 0)}
3d. {(-2, 4)}

EXERCISE 3.5

1. {(0, 0), (1, 1)}
2. {(4, 8), (0, 0)}
3. {(1, 9), (-3, 1)}
4. {(-V5, 5), (V5, 5)}
5. {(0,57, 2,38), (0,57, -2,38)}
6. {(5, 0), (-5, 0)}
7. {(-3, 2V5), (-3, -2V5), (-1, 2V3), (-1, -2V3)}
8. {(-1, 3), (-1, -3), (0, V5), (0, -V5)}
9. {(0, 0)}
10. {(-8, -4), (8, 4)}

EXERCISE 3.6

1. 7 : 9
2. Kopi = Rp 22.500
Gula = 5.500
3. 120 km
4. Ayah = 30 tahun
Anak = 12 tahun
5. 240 km
6. A = Rp 1.200
B = Rp 1.800
C = Rp 1.500
7. I = Rp 2.450
II = Rp 2.650
III = Rp 2.930
8. X = 245 orang
XI = 245 orang
XII = 240 orang
Diposkan oleh di

5 comments:

  1. AnonymousOctober 30, 2011 at 11:58 AM

    ditunggu komentarnya :)
    - bu yana -

    ReplyDelete
  2. luthviarOctober 30, 2011 at 11:01 PM

    ahaha yang komentar pertama kali bu yana.. yg dapet nilai bu yana.. hehe-,-
    -luthfi x.1-

    ReplyDelete
  3. luthviarOctober 30, 2011 at 11:43 PM

    saya baru menemukan beberapa kesalahan.. kesalahan selanjutnya menyusul ya bu :D
    exercise 3.5,
    4. {(-V5, 5), (V5, 5)} ---> {(V5,5)}, (V-6,-6)}
    5. {(0,57, 2,38), (0,57, -2,38)} ---> {(-10,567,V-105,67)}, {(0,567, 2,38)}
    8. {(-1, 3), (-1, -3), (0, V5), (0, -V5)} --> {(-1, 3), (-1, -3), (0, V6), (0, -V6)}
    9. {(0, 0)} ---> {(V3,-V3), (-V3,V3)}

    ReplyDelete
  4. Cut linaOctober 31, 2011 at 9:02 PM

    Saya juga ktmnya kayak lutfi bu. Trs saya exc.3.1 no 2a) 2/3 , 1/2 -----> 1/2 2/3 * kebalikannya

    ReplyDelete
  5. Formasi 81January 21, 2012 at 8:20 PM

    permisi bu, saya ada shortcut keyboard yang bisa ngebantu ngetik symbol matematika bu, ga semua nya sih tapi ada beberapa..
    Alt 241 ± Plus or Minus
    Alt 0188 ¼ Quarter
    Alt 0189 ½ Half
    Alt 0190 ¾ Three quarters
    Alt 46 . Decimal Point
    Alt 240 ≡ Exactly Identical
    Alt 61 = Equals
    Alt 247 ≈ Approximately equal
    Alt 60 < Less Than
    Alt 62 > Greater Than
    Alt 242 ≥ Greater than or equal
    Alt 243 ≤ Less than or equal
    Alt 251 √ Square Root
    Alt 252 ⁿ Power n
    Alt 0185 ¹ To the power of 1
    Alt 0178 ² squared
    Alt 0179 ³ cubed
    Alt 227 π Pi
    Alt 248 ° Degree sign

    dll --> http://www.jimprice.com/ascii-128-255.gif

    mudahmudahan bermanfaat ya bu :)

    ReplyDelete

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