Question

Tolong pake cara ya no 8,9
no9 pake cara limitt

Answer 1

8. daerah asal: x²-7x+10 > 0
                        (x-5)(x-2) > 0
    maka: x < 2 atau x > 5..............opsi C

9. cari f(y):
          f(x) = ³log (x+3) - 2
             y = ³log (x+3) - 2
         y+2 = ³log (x+3)
   3^(y+2) = x+3
3^(y+2)-3 = x
          f(y) = 3^(y+2) - 3
 
x = lim(y→ -∞) f⁻¹(y)
x = lim(y→ -∞) 3^(y+2) - 3 ; 3^(y+2) = 0
x = -3............opsi E