7 plsss repede !!!!!Este urgent
Răspunsuri la întrebare
Răspuns:
Explicație pas cu pas:
U(2^1) = 2
U(2^2) = 4
U(2^3) = 8
U(2^4) = 6
U(2^5) = 2
ultima cifra se repeta din 4 in 4
8 : 2 = 2
U(2^8) = 6
2011 : 4 = 502 rest 3
U(2^2011) = 8
_________________
U(3^1) = 3
U(3^2) = 9
U(3^3) = 7
U(3^4) = 1
U(3^5) = 3
ultima cifra se repeta din 4 in 4
8 : 2 = 2
U(3^8) = 1
__________________
U(5^8) = 5
__________________
U(7^1) = 7
U(7^2) = 9
U(7^3) = 3
U(7^4) = 1
U(7^5) = 7
ultima cifra se repeta din 4 in 4
2011 : 4 = 502 rest 3
U(7^2011) = 3
__________________
U(3^1) = 3
U(3^2) = 9
U(3^3) = 7
U(3^4) = 1
U(3^5) = 3
ultima cifra se repeta din 4 in 4
2011 : 4 = 502 rest 3
U(3^2011) = 7
U(4^1) = 4
U(4^2) = 6
U(4^3) = 4
U(4^2011) = 4
U(3^2011 + 4^2011) = U(7 + 4) = U(11) = 1
______________
U(5^203) = 5
U(6^235) = 6
U(8^1) = 8
U(8^2) = 4
U(8^3) = 2
U(8^4) = 6
U(8^5) = 8
ultima cifra se repeta din 4 in 4
429 : 4 = 107 rest 1
U(8^429) = 8
U(5^203 + 6^235 + 8^429) = U(5 + 6 + 8) = U(19) = 9
________________
2003 : 4 = 500 rest 3
U(7^2003) = 3
2007 : 4 = 501 rest 3
U(8^2007) = 2
U(9^1) = 9
U(9^2) = 1
U(9^3) = 9
U(9^2011) = 9
U(7^2003 + 8^2007 + 9^2011) = U(3 + 2 + 9) = U(14) = 4