Rozwiąz ciągi:
An = 4n kwadrat – 1
An = -n kwadrat+ 17n-60
4nkwadrat=1 /4
n kwadrat=1/4
n=/1/4
n=1/2
delta=bkwadrat-4ac=289+240=529
/delta=/529=23
x1=(-b-delta)/2a=-40/2=-20
x2=(-b+delta)/2a=6/2=3
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4nkwadrat=1 /4
n kwadrat=1/4
n=/1/4
n=1/2
delta=bkwadrat-4ac=289+240=529
/delta=/529=23
x1=(-b-delta)/2a=-40/2=-20
x2=(-b+delta)/2a=6/2=3