Question

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

Answer 1

ma= [ √2 +1 + 1/( √2+1)]/2

ma= (√2+1 + √2-1)/2=

ma= 2√2/2=  √2

Answer 2

Ma= a+ b/2=( √2 + 1+1/ √2 + 1)/2 =[(√2 + 1)^2 /√2+1)+ 1/√2+1]/2 =[(2+ 2√2+1+1) /√2+1]/2=(4+2rad2/rad2+1)/2=(4+2rad2)(rad2+1)/2=4rad2+4+4+ 2rad2/2=6rad2+8/2=3rad2+4