2log x · logx/log4 ·logx/log8 = 4/3Kim
22-1-2003
Hoi,
Je zet best alles in 2log(x):
Bedenk dat log(x)/log(b)=blog(x), dat log(xy)=y.log(x) en dat x=blog(bx).
2log(x).log(x)/log(4).log(x)/log(8)=4/3
2log(x).log(x)/(2.log(2)).log(x)/(3.log(2))=4/3
2log3(x)=6.4/3
2log3(x)=8
2log(x)=2
x=4
Groetjes,
Johan
andros
22-1-2003
#6869 - Logaritmen - 3de graad ASO