krjakn dengan cranya cpat ya yg ahli matematika no 2-3 aj

Bab Limit
Matematika SMA Kelas XI

***permintaan pengirim soal, nomor 3 saja***

3a]
lim (sin² x) = (sin pi/2) . (sin pi/2) = 1
x→pi/2

3b]
lim (cos (x - pi/3))
x→pi/2
= lim (cos (pi/2 - pi/3)
...x→pi/2
= lim (cos (pi/6))
...x→pi/2
= 1/2 . √3

3c]
lim (ax / sin bx) = a/b
x→0

3d]
lim ((sin² x) / (4x²) = 1/4
x→0