求下列函数的极限( 1 )lim _(xarrow infty )dfrac ({(2x-1))^10((7x+2))^20}(5{x)^30}( 2 )lim _(xarrow infty )dfrac ({(2x-1))^10((7x+2))^20}(5{x)^30}

求下列函数的极限：（1）lim _(xarrow +infty )dfrac ({(2x-1))^10((7x+2))^20}(5{x)^30}（2）lim _

求下列函数的极限lim _(xarrow infty )dfrac ({(2x-1))^10((7x+2))^20}(5{x)^30}求下列函数的极限

3.求下列函数的极限.-|||-(1) lim _(xarrow infty )x((e)^dfrac (1{x)}-1);-|||-(2) lim _(xar

)求下列极限:-|||-(1) lim _(xarrow 1)dfrac ({x)^2-x+1}({(x-1))^2} =-|||-(3) lim _(xarr

极限lim _(xarrow infty )(x)^2(2-xsin dfrac (1)(x)-cos dfrac (1)(x))=A.lim _(xarrow

根据函数极限的定义证明:(1)lim _(xarrow infty )dfrac (1+{x)^3}(2{x)^3}=dfrac (1)(2) __;(2)li

求下列极限:-|||-lim _(xarrow +infty )(({2)^x+(3)^x)}^dfrac (1{x)}

求下列极限lim _(xarrow infty )dfrac ({(1+dfrac {1)(x))}^(x^2)}({e)^x}求下列极限

求极限lim _(xarrow infty )((1-dfrac {1)(2x))}^dfrac (3{2)x}求极限

2.求极限 lim _(xarrow infty )[ (2+x)(e)^dfrac (1{x)}-x]