а) x1=2,xn=xn−1+5
xn=2+5(n−1)=7n−3
б) x1=7,xn=2xn−1
xn=7⋅2n−1
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а) x1=2,xn=xn−1+5
xn=2+5(n−1)=7n−3
б) x1=7,xn=2xn−1
xn=7⋅2n−1