Question

Sa se calculeze media aritmetica, geometrica si armonica a numerelor:
Urgent, va rog!!!

Answer 1

Răspuns:

Explicație pas cu pas:

a) x=2 1/3+2/3=3

y=5(0,04+0,16)=5·0,2=1

ma=(3+1)/2=2

mg²=3·1   ⇒mg=√3

mh=2/(1/3+1)=2·3/4=3/2

b)x=3√3+2       y=3√3-2

ma=(3√3+2 +3√3-2)/2=3√3

mg²=(3√3+2)(3√3-2)=27-4=23   ⇒mg=√23

mh=2[1/(3√3+2 )+1/(3√3-2)=2·27/3√3=18/√3=6√3

c) x=√21/3+1    y=√21/3-1

ma=(x+y)/2=√21/3

mg²=(√21/3+1)(√21/3-1)   ⇒mg²=21/9-1=12/9=4/3    ⇒mg=2√3/3

mh=2·4/3/√21/3=8/√21=8√21/21