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Kategori soal : matematikaKelas : 12 SMA
Materi : transformasi geometri
Kata kunci : rotasi
Pembahasan : perhitungan terlampir
(x,y) = ( cos 270°-sin270°/ sin 270°. cos 270°) (x,y)
(x,y) =( 0 1/ -1 0 ) (x,y)
(x',y') = (y/x)
x= y', y= x'
3x-5y=8
3(-y')+5(x')= 8
-3y+5x=8 ------------ jadi, Persamaan Parabolanya adalah 5x-3y=8
B. Parabola y= x^2-2x-8
x=-y' ; y= x'
x= (-y')^2-2(-y')-8
x'= y^2+2y'-8 ----------- jadi, Persamaan Parabolanya
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