求 lim _(xarrow 1)dfrac (2x-3)({x)^2-5x+4}
lim _(xarrow 2)dfrac (sin (x-2))({x)^2-4}=lim _(xarrow 2)dfrac (sin (x-2))({x)^2
(单选题)lim _(xarrow infty )((dfrac {x-4)(x))}^2x=____lim _(xarrow infty )((dfrac {
(4) lim _(xarrow infty )((dfrac {x+2)(x))}^x;
(4)lim _(xarrow infty )dfrac ({3)^x+4cdot (2)^x}({2)^x-3cdot (5)^x}(4)
lim _(xarrow 2)dfrac (sqrt {{x)^2+5}-3}({x)^2-4}=-|||-○
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
cos dfrac (x)({2)^n})(提示:lim _(xarrow infty )(cos dfrac (x)(2)cos dfrac (x)(4)co
2.求下列极限:-|||-(1) lim _(xarrow 4)dfrac ({x)^4-256}(x-4);-|||-(2) lim _(xarrow 0)d