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Hitunglah 5log 9+3⋅5log 2+21​⋅5log 25−2⋅5log 6−5log 2=....

Pertanyaan

Hitunglah

log presuperscript 5 space 9 plus 3 times log presuperscript 5 space 2 plus 1 half times log presuperscript 5 space 25 minus 2 times log presuperscript 5 space 6 minus log presuperscript 5 space 2 equals....

Y. Umi

Master Teacher

Mahasiswa/Alumni Universitas Gadjah Mada

Jawaban terverifikasi

Jawaban

 table attributes columnalign right center left columnspacing 0px end attributes row cell log presuperscript 5 space 9 plus 3 times log presuperscript 5 space 2 plus 1 half times log presuperscript 5 space 25 minus 2 times log presuperscript 5 space 6 minus log presuperscript 5 space 2 end cell equals 1 end table.

Pembahasan

Ingat!

Sehingga

begin mathsize 12px style table attributes columnalign right center left columnspacing 0px end attributes row cell log presuperscript 5 space 9 plus 3 times log presuperscript 5 space 2 plus 1 half times log presuperscript 5 space 25 minus 2 times log presuperscript 5 space 6 minus log presuperscript 5 space 2 end cell equals cell log presuperscript 5 space 9 plus log presuperscript 5 space 2 cubed plus log presuperscript 5 space square root of 25 minus log presuperscript 5 space 6 squared minus log presuperscript 5 space 2 end cell row blank equals cell log presuperscript 5 space fraction numerator 9 times 8 times 5 over denominator 36 times 2 end fraction end cell row blank equals cell log presuperscript 5 space 5 end cell row blank equals 1 end table end style

Dengan demikian, table attributes columnalign right center left columnspacing 0px end attributes row cell log presuperscript 5 space 9 plus 3 times log presuperscript 5 space 2 plus 1 half times log presuperscript 5 space 25 minus 2 times log presuperscript 5 space 6 minus log presuperscript 5 space 2 end cell equals 1 end table.

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Dengan menggunakan tabel atau kalkulator, hitunglah nilai x berikut. a. log x=1,7782

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