Podaj pierwsze trzy wyrazy ciągu określonego wzorem : an=7n+1/n (jedna enta) an=2n+1/2n-1
an=7n+1/n (jedna enta)
a₁=7*1+1/1=7+1=8
a₂=7*2+1/2=14+1/2=14,5
a₃=7*3+1/3=21+1/3=21 1/3
an=2n+1/2n-1
a₁=2*1+1/2*1-1=3/1=3
a₂=2*2+1/2*2-1=5/3=1 2/3
a₃=2*3+1/2*3-1=7/5=1 2/5
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an=7n+1/n (jedna enta)
a₁=7*1+1/1=7+1=8
a₂=7*2+1/2=14+1/2=14,5
a₃=7*3+1/3=21+1/3=21 1/3
an=2n+1/2n-1
a₁=2*1+1/2*1-1=3/1=3
a₂=2*2+1/2*2-1=5/3=1 2/3
a₃=2*3+1/2*3-1=7/5=1 2/5
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