Question

Lim x-> π/8 sin^2 2x - cos^2 2x / sin 2x - cos 2x =....
Pliss Tolong dibantu ya kaka2 skrg mau dikumpulin: -)

Answer 1

Lim x-> π/8

(sin² 2x - cos² 2x) / (sin 2x - cos 2x)

=(sin 2x - cos 2x)(sin 2x + cos 2x) / (sin 2x - cos 2x)

= sin 2x + cos 2x

=sin ¼+ cos ¼x.

=½√2+½√2

=√2