Question

Buna seara! daca se poate ajutor , va rog​

Answer 1

subunitara adica 3n+1 < 2n+5

3n-2n < 5-1

n < 4 (alegi oricare valori de la 0 la 3)

supraunitara adica 3n+1 > 2n+5

n > 4 (alegi oricare alte valori de la 5 in sus)

echiunitara adica 3n+1 = 2n+5

n = 4

echivalenta adica (3n+1)/(2n+5) = 4/3

3(3n+1) = 4(2n+5)

9n+3 = 8n+20

9n-8n = 20-3

n = 17