Question

Me ajudem


A) 3^t menor ou igual a 9^2/t

Answer 1

$3^t\leq9^{\frac{2}{t}}\\\\3^t\leq3^{2^{\frac{2}{t}}}\\\\3^t\leq3^{2.\frac{2}{t}}\\\\3^t\leq3^{\frac{4}{t}}\\\\t\leq\frac{4}{t}\\\\t\;.\;t\leq4\\\\t^2\leq4\\\\t\leq\sqrt{4}\\\\t \leq 2$