3.计算下列极限.-|||-(1) lim _(xarrow 2)(-2) ;-|||-(3) lim _(xarrow 2)dfrac ({x)^2-16}(x-4) ;-|||-(5) lim _(xarrow 1)(dfrac (1)(1-x)-dfrac (3)(1-{x)^3}) ;-|||-(7) lim _(xarrow 1)dfrac (sqrt {x+3)-2}(x-1) ;-|||-(9) lim _(xarrow infty )dfrac (9{x)^4+3(x)^2-10}(3{x)^4+(x)^3-(x)^2+1} ;-|||-(2) lim _(xarrow 1)((x)^3-(x)^2+x-1) ;-|||-(4) lim _(xarrow 3)dfrac ({x)^2-9}(x-3) ;-|||-(6) lim _(xarrow 0)dfrac ({(x+h))^3-(x)^3}(h) ;-|||-(8) lim _(xarrow +infty )sqrt (x)(sqrt (x+2)-sqrt (x+1))-|||-(10) lim _(xarrow infty )dfrac ({x)^3-2(x)^2+5}(100{x)^2+15} -

1.计算下列极限:-|||-(1) lim _(xarrow 2)dfrac ({x)^2+5}(x-3) =-|||-(4) lim _(xarrow 1)d

1.计算下列极限:-|||-(1) lim _(xarrow 2)dfrac ({x)^2+5}(x-3) ;-|||-(4) lim _(xarrow 0)d

3.计算下列极限(1) lim_(x→2)(-2) ;(2) lim_(x→1)(x^3-x^2+x-1) ;21(3)lim_(x→2)(x^2-16)/(x

3.计算下列极限(1) lim_(x→2)(-2) ;(2) lim_(x→1)(x^3-x^2+x-1) ;21(3)lim_(x→2)(x^2-16)/(x

3.求下列极限:-|||-(1) lim _(xarrow 2)dfrac ({x)^2-3x-4}({x)^2-4} =-|||-(3) lim _(xarr

3.求下列极限:-|||-(1) lim _(xarrow 2)dfrac ({x)^2-3x-4}({x)^2-4} :-|||-(3) lim _(xarr

计算函数极限(1)lim _(xarrow 1)dfrac (x-3)(x+2)(2)lim _(xarrow 1)dfrac (x-3)(x+2)(3)lim

1.计算下列极限:-|||-(1) lim _(xarrow -1)dfrac ({x)^2+2x+1}(x-1) ;-|||-(3) lim _(xarrow

15.计算下列极限:-|||-(1) lim _(xarrow 0)sqrt ({x)^2-4x+2} ;-|||-(3) lim _(xarrow 0)dfr

计算下列极限：(1) lim _(xarrow 0)(x)^2sin dfrac (1)(x);-|||-(2) lim _(xarrow infty )dfr