3.设 x>0, 且 -dfrac (1)(x)=1, 求 ^3-dfrac (1)({x)^3} 的值.

3.求下列极限.-|||-(3) lim _(xarrow {0)^+}dfrac (1-{e)^dfrac (1{x)}}(x+{e)^dfrac (1{x)

设dfrac(x)({x)^2 -3x+1} =1，求dfrac({x)^3}({x)^6-27(x)^3+1}的值.设$\dfrac{x}{{x}^{2} -

已知实数x满足(x)^2+dfrac (1)({x)^2}-3x-dfrac (3)(x)+2=0，求(x)^3+dfrac (1)({x)^3}的值.已知实数

3.设 approx N(0,(4)^2), approx N(1,(3)^2), 且 (rho )_(x)=-dfrac (1)(2), 令 =dfrac (

求lim _(xarrow 1)(dfrac (3)(1-{x)^3}-dfrac (1)(1-x))=()lim _(xarrow 1)(dfrac (3)(

3.求极限 lim _(xarrow 1)dfrac (sqrt [3]{x)-1}(sqrt {x)-1}

3.极限 lim _(xarrow 0)(dfrac (1+x)(tan x)-dfrac (1)(x))=

求方程=dfrac (1)(3)(e)^x根的牛顿迭代格式为=dfrac (1)(3)(e)^x=dfrac (1)(3)(e)^x=dfrac (1)(3)(

3.设 (x)=dfrac (1)(1+2x+4{x)^2} 则 ^(100)(0)= __

求极限lim _(xarrow 0)dfrac (1)({x)^3}[ ((dfrac {2+cos x)(3))}^x-1] -|||-__求极限