Pomozcie !
Oblicz pierwszy wyraz ciągu i różnice mając dane : a4=1 2/3 i a11= 4
Dziekuje za Pomoc ! pozdrawiam
a4=5/3
a11=4
a4+ 7r=a11
5/3+ 7r= 4
7r+ 12/3 - 5/3
r=1/3
a1 + 3r= a4
a1+1= 5/3
a1= 5/3 -1
a1=2/3
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a4=5/3
a11=4
a4+ 7r=a11
5/3+ 7r= 4
7r+ 12/3 - 5/3
r=1/3
a1 + 3r= a4
a1+1= 5/3
a1= 5/3 -1
a1=2/3