dfrac (d)(dx)(int )_(x)^-1t(e)^-tdt= __

(d)/(dx)int_(1)^x^(2)sin tdt= （ ）A. 2xsin x²B. sint²C. sin x²D. 2tsint²

( 单选题 ) int dfrac ({e)^x}(1+{e)^2x}dx=_________int dfrac ({e)^x}(1+{e)^2x}dx=int

int t(e)^-2tdt.-|||-.int (ln )^2xdx-|||-.int xsin xcos xdx.-|||-15. int (x)^2(co

计算下列各导数:-|||-(1) dfrac (d)(dx)(int )_(0)^(x^2)sqrt (1+{t)^2}dt;-|||-(2) dfrac (d

求极限lim _(xarrow 0)dfrac ({int )_(0)^x((e)^t-1)cos tdt}(xarctan x)-|||-__求极限

int dfrac (dx)(sqrt {1+{e)^x}}

int 1(e)^-2tdt-|||-.(int )_(1)^2xdx.-|||-.fxsin xcos xdx.-|||-15. int (x)^2(cos

5.计算下列各导数:-|||-(1) dfrac (d)(dx)(int )_(0)^(x^2)sqrt (1+{t)^2}dt;-|||-(2) dfrac

(int )_(1)^(e^2)dfrac (ln x)(sqrt {x)}dx= __

int dfrac ({e)^x}({2)^x}dx;