Ответы и объяснения

2013-05-08T18:20:21+00:00

(4^(4n-2))*(0.2^-2n)/(80^(2n-1)=(16^2n/16*5^2n)/(80^2n/80)=80^2n/16*80/80^2n=5

2013-05-08T18:30:22+00:00

(4^(4n-2))*(0.2^-2n)/(80^(2n-1))=(16^2n/16*5^2n)/(80^2n/80)=(80^2n)/16*80/(80^2n)=

=400n*80/(80^2*n)=32000n/(6400n)=5n/n=5