Question

$Media aritmetica a numerelor \sqrt{2} + 1 si \frac{1}{ \sqrt{2+ 1} } este$

Answer 1

$\displaystyle \sqrt{2} +1 \\ \\ \frac{1}{ \sqrt{2}+1 } = \frac{ \sqrt{2} -1}{2-1} = \sqrt{2} -1 \\ \\ m_a= \frac{ \sqrt{2} +\not1+ \sqrt{2} -\not1}{2} = \frac{\not2 \sqrt{2} }{\not2}= \sqrt{2}$