MATHEMATICS DIFFERENTIATION
(I) Lim x→0 sin 3x/x
Lim x→0 sin 3x÷x × 3÷3
3sin3x/3x
= 3• Limx→0 Sin3x÷3x
3×1 = 3
(2) Lim x→0 tanx/x
Lim x→0 [tanx÷x × 1÷cosx]
Lim x→0 tanx/x • Lim x→0 1/cosx
Lim x→0 tan0/0 • Lim x→0 1/cos0
1•1 = 1
(
Calculus, Mathematics, mathematics MTH, Product rule and sum rule
find the limit of x approaches infinity when sinx/x
