Question

considerando log2=0,3 log 3= 0,5e log5=0,7 determine o valor de a) (log 1,5 ) ao quadrado b) log raiz de 0,3

Answer 1

a) log((5x3)/10))²=2log((5x3)/10))
2(log 5+log 3-log10)
2(0,7+0,5-1)=2x0,2=0,4

b) log √3=log √3/10=log (3/10)½= 1/2 log 3/10= 1/2x(log 3-log 10)=1/2x(0,5-1)=1/2x-1/2= -1/4