Question

Va rog repede dau coroana!!!!Ex 12!!

Answer 1

a) (2/3)^n=16/81=(2/3)^4=> n= 4
b) (1/7)^n=1/343=>7^-n=7^-3=>n=3
c) (1si1/2)^n=3,375=>(3/2)^n=3375/1000=>
(3/2)^n=27/8=>(3/2)^n=(3/2)^3=>n=3
d) (2,5)^n=125/8=>(25/10)^n=(5/2)^3=>
(5/2)^n=(5/2)^3=> n=3
e) [0,(1)]^n=1/729=>(1/9)^n=1/728=>
(1/3^2)^n=1/3^6=>3^-2n=3^-6=> -2n=-6=>n=-6:-2=>n=3
f) (1/8)^n=0,015625=> (1/2^3)^n=1/2^6
=>2^-3n=2^-6=>-3n=-6=>n=-6:-3=> n=2