Question

\(\dfrac{2\sqrt{a}}{3}\le1\)

Answer 1

\(\dfrac{2\sqrt{a}}{3}\le1\)

<=>\(2\sqrt{a}\le3\)

<=>\(\sqrt{a}\le\dfrac{3}{2}\)

<=>\(a\le\dfrac{9}{4}\)

Answer 2

 

Với a\(\ge0\)

\(\dfrac{2\sqrt{a}}{3}\le1\)<=>\(2\sqrt{a}\le3\)

                <=>\(\sqrt{a}\le\dfrac{3}{2}\)

                <=>\(a\le\dfrac{9}{4}\)

Kết hợp với ĐKXĐ ta được

\(0\le a\le\dfrac{9}{4}\)

 

\(\ge0\)

Answer 3

\(BPT\Leftrightarrow\dfrac{2\sqrt{a}}{3}\le\dfrac{3}{3}\Leftrightarrow2\sqrt{a}\le3\Leftrightarrow a\le\dfrac{9}{4}\)