1. Garis 4x - 3y = 10 menyinggung lingkaran x^2 + y^2 + 6x - 2y -15 = 0 dititik? 2. Jika a ≤ b cos ( π - x ) + 5 ≤ 8, maka nilai b - a ? 3. Lim 2x( √9 + 10/x
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Pertanyaan
1. Garis 4x - 3y = 10 menyinggung lingkaran x^2 + y^2 + 6x - 2y -15 = 0 dititik?
2. Jika a ≤ b cos ( π - x ) + 5 ≤ 8, maka nilai b - a ?
3. Lim 2x( √9 + 10/x - 3)
x → ∞
2. Jika a ≤ b cos ( π - x ) + 5 ≤ 8, maka nilai b - a ?
3. Lim 2x( √9 + 10/x - 3)
x → ∞
1 Jawaban
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1. Jawaban DB45
1. garis 4x - 3y =10
ling (x+3)²+(y-1)² =25
(x1+3)(x+3) +(y1-1)(y-1)= 25 -> 4(x) - 3(y) = 10
x1 +3 = 4 --> x1 = 1
y1-1 = - 3
y1 = -2
TS(x1,y1) = (1, -2)