Question

Seja log 8= 0,90 e log 5= 0,69, calcule:

a) log 40=
b) log 10=
c) log 500=
d) log 64=

Me ajudem, por favor!

Answer 1

log8=0,9.....log2³=0,9.....3.log2=0,9...log2= 0,9/3...log2=0,3
a)log40=log(4.10)=log4+log10= log2² +1=2.log2+1=2.0,3+1=1,6
b)log10= log(2.5)= log2+log5=0,3+0,69=0,99
c)log500=log(5.100)=log5 +log100 =0,69 +2 =2,69
d)log64=log2^6=  6.log2 =6.0,3  =1,8