Question

Scrieti primii 5 termeni ai progresiei aritmetice in cazurile: a8=2/3, a9=1/2. a1= 2radical din 3 , r= - radical din 3. Ajutor va rooog e urgent.

Answer 1

r=a9-a8=1/2-2/3=3/6-4/6=-1/6
 a1 =a8-7r=2/3+7/6=4/6+7/6=11/6
a2=10/6=5/3
a3=9/6=3/2
a4=8/6=4/3
a5=7/6
extra ..dac vei continua pana la a8 vei obtine 4/6=2/3



a1=2√3
a2=a1+r= 2√-√3=√3
a3=0
a4=-√3
a5=-2√3
 as simple as that ! ( a doua)