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Bab Trigonometri
Matematika SMA Kelas XI

10]
Lim (cos 4x - 1) / (x . tan 2x)
x→0

= Lim (1 - 2 sin² 2x - 1) / (x . tan 2x)
...x → 0

= Lim (-2 sin 2x . sin 2x) / (x . tan 2x)
....x → 0

= (-2 . 2 . 2) (1 . 2)
= -4

jawabannya E

1]
...........16..-20..0..3..-6

-1/2 | ........-8...14.-7..2
-------------------------------- +
...........16..-28..14..-4.|| -4

(16x^3 - 28x² + 14x - 4) : 2 = 8x^3 - 14x² + 7x - 2

hasil bagi = 8x^3 - 14x² + 7x - 2
sisa = -4