Question

rezolvati in inmultira numerelor naturale inecuatia

3 la putera x+1 < sau = 81

Answer 1

3 la putera x+1 < sau = 81

3ˣ⁺¹≤81
3ˣ⁺¹≤3⁴
x+1≤4
x≤4-1
x≤3
x=0,1,2,3

Answer 2

$3^{x+1}$  ≤ 81
$3^{x+1}$  ≤ $3^{4}$
x+1≤4
x≤4-1
x≤3
x∈{ 0,1,2,3 }