September 2018 1 332 Report
Quiz Matematika

> Jawab dengan lengkap beserta cara
> Jika kurang jelas silahkan tanyakan di komentar

1) Jika sin x + 4 cos y = 5, maka nilai minimum 3 cos x + 4 sin y adalah ...
A. 0
B. - 2√3
C. - 2√6
D. - 2√7
E. - 6

2) Penyelesaian pertaksamaan x² - 2 ≤ |2x + 1| adalah ...
A. - 1 - √2 ≤ x ≤ 3
B. - 1 - √2 ≤ x ≤ - 1 + √2
C. - 1 -√2 ≤ x ≤ - 1/2
D. - 1 ≤ x ≤ - 1 + √2
E. - 1 ≤ x ≤ 3
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