Diketahui:
x²+y²+12x+2ay-7 = 0
titik: p(1,-2)
kuasa = 2
Ditanyakan:
a
Jawab:
kuasa = x²+y²+12x+2ay-7
2 = 1²+(-2)²+12(1)+2a(-2)-7
2 = 1+4+12-4a-7
2 = 10-4a
4a = 10-2
4a = 8
a = 2
Mapel: Matematika
Kelas: 11
Materi: Lingkaran
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Diketahui:
x²+y²+12x+2ay-7 = 0
titik: p(1,-2)
kuasa = 2
Ditanyakan:
a
Jawab:
kuasa = x²+y²+12x+2ay-7
2 = 1²+(-2)²+12(1)+2a(-2)-7
2 = 1+4+12-4a-7
2 = 10-4a
4a = 10-2
4a = 8
a = 2
Mapel: Matematika
Kelas: 11
Materi: Lingkaran