Question

Bantuin jawab doong yang mana teman" bisa...

Answer 1

X² + y² = 8
2² + y² = 8
4 + y²  = 8
      y² = 4
      y = 2 atau y = -2 ---> titik singgung (2 , 2) atau (2 , -2)
persamaan garis singguny
x1.x + y1.y = r²
2x + 2y = 8 gradien negatif tak memenuhi
x1.x + y1.y = r²
2x + -2y = 8
  x - y = 4
       y = x - 4 .......... jawaban A
f(x) = 2^(3x - 1)
y = 2^(3x - 1)
log y = (3x - 1).log 2
3x - 1 = 2^log y
3x = 1 + 2^log y
3x = 2^log 2 + 2^log y
3x = 2^log 2y
  x = (1/3)2^log 2y
  x = 2^log ∛2y
f^-1(x) =  2^log ∛2x
g(x) = 4(x + 2)³
f^-1(x)og(x) =  2^log ∛2.4 (x + 2)³
                 = 2^log ∛8 (x + 2)³
                 = 2^log 2(x + 2)
                 = 2^log (2x + 4) ....jawaban C