Transformasi
*
9) x² + y² + 4 di Tranformasi Matriks [1...-1||1...3}
lihat lampiran (gambar)
10) y = 3x+ 7 dan 3x + 2y + 4= 0 diTranslasi T(a, b) berpotongan
di O(0,0)
y = 3x + 7 di T (a,b)
y - b = 3(x - a) + 7
(0.0) --> x= 0 , y = 0 sub ke y - b = 3(x - a) + 7
0 - b = 3(0 -a) + 7
-b = -3a + 7 ---> 3a - b = 7 ....(i)
3x + 2y + 4= 0 di T (a,b)
3(x - a) + 2(y - b) + 4 = 0
(0,0) --> x= 0, y = 0 sub ke 3(x - a) + 2(y - b) + 4 = 0
3(0 - a) + 2(0 - b) + 4 = 0
-3a - 2b + 4= 0
3a + 2b = 4 ...(ii)
(i) dan (ii) eliminasikan
3a - b = 7
3a + 2b = 4
kuranghkan
-3b = 3
b = - 1
3a - (-1)= 7
3a = 7- 1= 6
a= 3
Translasi T(a,b) =(3, -1)
**
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Transformasi
*
9) x² + y² + 4 di Tranformasi Matriks [1...-1||1...3}
lihat lampiran (gambar)
*
10) y = 3x+ 7 dan 3x + 2y + 4= 0 diTranslasi T(a, b) berpotongan
di O(0,0)
*
y = 3x + 7 di T (a,b)
y - b = 3(x - a) + 7
(0.0) --> x= 0 , y = 0 sub ke y - b = 3(x - a) + 7
0 - b = 3(0 -a) + 7
-b = -3a + 7 ---> 3a - b = 7 ....(i)
*
3x + 2y + 4= 0 di T (a,b)
3(x - a) + 2(y - b) + 4 = 0
(0,0) --> x= 0, y = 0 sub ke 3(x - a) + 2(y - b) + 4 = 0
3(0 - a) + 2(0 - b) + 4 = 0
-3a - 2b + 4= 0
3a + 2b = 4 ...(ii)
*
(i) dan (ii) eliminasikan
3a - b = 7
3a + 2b = 4
kuranghkan
-3b = 3
b = - 1
*
3a - b = 7
3a - (-1)= 7
3a = 7- 1= 6
a= 3
*
Translasi T(a,b) =(3, -1)
**