<span><span>аn <span>=a1 +d(n-1)</span></span> a1=-101? d=-96-(-101)=5</span>
<span /><span>-96+5( n-1) ˃0</span>
<span /><span><span>5n<span>˃96+5 n<span>˃ 20,2 n=21</span></span></span></span>
см.рис.