Tolongin dong ini gimana sih? please bantuin
diketahui : log 2 = 0,3010
log 3 = 0,4771
log 7 =0,8451
tentukan
a. log 10,5
b. log 1/7
diketahui : log 2 = 0,3010
log 3 = 0,4771
log 7 =0,8451
tentukan
a. log 10,5
b. log 1/7
log 10,5
= log (21/2)
= log 21 - log 2
= log (3×7) - log 2
= log 3 + log 7 - log 2
= 0,4771 + 0,8451 - 0,3010
= 1,0212
log 1/7
= log 7⁻¹
= - log 7
= - 0,8541