matematykaszkolna.pl
logarytm zbn137: Obliczyć 2xlog2/3 x = 432/3
7 lis 13:33
Eta: x>0 , log2/3x=a ⇒ x=(2/3)a 432/3= 242/3 =2* (2/3)1/4 [(2/3)a]a= (2/3)1/4⇒ a2=1/4 ⇒ a=1/2 v a= −1/2 to log2/3x=1/2 v log2/3x= −1/2 x= 2/3 =6/3 v x= 6/2 =====================
7 lis 14:07