Question

Tolong pliss. Amal jariah nih

Answer 1

limit bentuk 0/0

12.  lim (x -> 0) { sin 5x - sin 3x } / { x cos x }

= lim (x -> 0 )  1/x ( sin 5x - sin 3x) / cos x

= lim (x -> 0)  (sin 5x/ x - sin 3x/x) / lim x -> 0 cos x

= (5 - 3)/ 1

= 2

*

13. lim (x -> 0)  { 3 sin 1/2 x } / { tan 1/3 x}

= 3 (1/2) / (1/3)

= (3/2) / (1/3)

= 9/2

=  4 ¹/₂