Nilai limit x mendekati π/3 tan(3x – π) cos2x/sin(3x – π) = …

by

Pembahasan:

  lim   tan(3x – π) cos2x
x￫π/3      sin(3x – π)
= lim     cos2x
   x￫π/3
= cos 2 π/3
= cos 120°
= -½
  Fungsi f(x) = ⅓x³ - x² - 8x + 5 turun pada interval