Soal Ujian Matematika IPA Kelas 12
Tahun 2017Soal Pilihan Ganda
3. Hasil ( √3log5 25log3√3 - 4log16 ) / ( 3log54 - 3log2) adalah ...
B. - 1/6
C. - 1/3
D. 3
E. 9/2
Jawaban : B
( √3log5 25log3√3 - 4log16 )
= -----------------------------------
( 3log54 - 3log2)
( √3log5 25log33/2 - 4log42 )
= -----------------------------------
( 3log33 2 - 3log2)
( 3/2 . 1/2 . 2 3log5 5log3 - 2 4log4 )
= -----------------------------------------
( 3 3log3 + 3log2 - 3log2)
( 3/2 . 1 - 2 . 1 )
= ---------------------
( 3 . 1 + 0)
- 1/2
= --------
3
= - 1/6
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