AB(B-1 + A)(B – A-1 ) | = | AB( I – B-1 A-1 + AB–I) |
= | –I + ABAB | |
= | ABAB – I |
no.18
Jawaban:C
no.19
Jawaban:B
no.20
sin θ. cos θ=cos2θ
cos θ (sin θ – cos θ )=0
cos θ=0 atau cos θ=sin θ
θ=90°, atau θ=45°,
Sehingga nilai x yang memenuhi adalah 45°
Jawaban:C
AB(B-1 + A)(B – A-1 ) | = | AB( I – B-1 A-1 + AB–I) |
= | –I + ABAB | |
= | ABAB – I |
Sign up to receive breaking news
as well as receive other site updates!
0 comments:
Post a Comment