Question

Решите неравенство 12^x-16*3^3>0

Answer 1

12ˣ-16×3³>0
12ˣ-4²×3²×3>0
12ˣ>12²×3
12ˣ/12²>3
12ˣ⁻²>3
(x-2)lg12>lg3
x-2>lg3/lg12
x>2+lg3/lg12≈2.442