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lim(x->∞) ∑(y:1->x) (8y/x +3)(4/x)
=lim(x->∞) (4/x) ∑(y:1->x) (8y/x +3)
=lim(x->∞) (4/x) [ (4/x)x(x+1) +3x) ]
=lim(x->∞) 4[ (4/x)(x+1) +3 ]
=lim(x->∞) 4[ 4(1+ 1/x) +3 ]
=4( 4+3)
=28
=lim(x->∞) (4/x) ∑(y:1->x) (8y/x +3)
=lim(x->∞) (4/x) [ (4/x)x(x+1) +3x) ]
=lim(x->∞) 4[ (4/x)(x+1) +3 ]
=lim(x->∞) 4[ 4(1+ 1/x) +3 ]
=4( 4+3)
=28
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