a1=22.7, a2=21.4
d=a2-a1=21.4-22.7=-1.7,
an=a1+(n-1)d=22.7-1.7(n-1)≈0,
24.4-1.7n≈0,
-1.7n≈-24.4,
n≈14 6/17,
n=14, a14=22.7+13*(-1.7)=0.6,
n=15, a15=22.7+14*(-1.7)=-1.1,
|0.6|<|-1.1| {0.6 ближе к нулю}
a14=0.6
a1=22.7, a2=21.4
d=a2-a1=21.4-22.7=-1.7,
an=a1+(n-1)d=22.7-1.7(n-1)≈0,
24.4-1.7n≈0,
-1.7n≈-24.4,
n≈14 6/17,
n=14, a14=22.7+13*(-1.7)=0.6,
n=15, a15=22.7+14*(-1.7)=-1.1,
|0.6|<|-1.1| {0.6 ближе к нулю}
a14=0.6