Question

Lim x mendekati 45° sin x + cos x bagi 1 + sin 2x

Answer 1

Dimasukkan saja x nya = 45°
(sin 45° + cos 45°)/(1 + sin 2(45°))
= (1/2 √2 + 1/2 √2) / (1 + sin 90°)
= √2 / 2
= (1/2)√2