we are given with the expression to simplify
[tex] \sqrt{2} +\frac{1}{\sqrt{2}} [/tex]
This can be simplified as below
[tex] \sqrt{2} +\frac{1}{\sqrt{2}}=\sqrt{2} +\frac{1}{\sqrt{2}}*\frac{\sqrt{2}}{\sqrt{2}} \\
\\
on \ simplification \ we \ get\\
\\
\sqrt{2} +\frac{1}{\sqrt{2}}=\sqrt{2} +\frac{\sqrt{2}}{2} \\
\\
Now \ add \ the \ terms \ on \ right \ side\\
\\
\sqrt{2} +\frac{1}{\sqrt{2}}=\frac{2\sqrt{2}+\sqrt{2}}{2} \\
\\
Simplify\\
\\
\sqrt{2} +\frac{1}{\sqrt{2}}=\frac{3\sqrt{2}}{2} \\
\\ [/tex]