Giải thích các bước giải:
Câu 82:
lim(1+2n)5n+1lim(1+2n)5n+1
=lim(1+2n)5n.(1+2n)=lim(1+2n)5n.(1+2n)
=lim((1+2n)n2)10.(1+2n)=lim((1+2n)n2)10.(1+2n)
=e10.(1+0)=e10=e10.(1+0)=e10
Câu 83:
lim(n+5n+2)3n+7lim(n+5n+2)3n+7
=lim(n+2+3n+2)3n+7=lim(n+2+3n+2)3n+7
=lim(1+3n+2)9.n+23+1=lim(1+3n+2)9.n+23+1
=lim((1+3n+2)n+23)9.(1+3n+2)=lim((1+3n+2)n+23)9.(1+3n+2)
=e9.1=e9=e9.1=e9
