设$f\left(x\right)$的原函数为$2x+3\sin x$,则$f\left(x\right)$$\left(\,\,\,\,\,\,\right)$
$A、{x}^{2}+3\cos x$
$B、2+3\cos x$
$C、{x}^{2}-3\cos x$
$D、2-3\cos x$
函数f(x)=x-2sin(x)/(2)cos(x)/(2),则f′((π)/(3))=( )A. 0B. $\frac{1}{2}$C. $\frac{\sq
计算函数 =3(e)^x+2ln x+cos x的二阶导数( ) A =3(e)^x+2ln x+cos xB 3 ex + 2 x + x C =3(e)^
函数f(x)=x-2sin(x)/(2)cos(x)/(2),则f′((π)/(4))=( )函数f(x)=x-2sin$\frac{x}{2}$cos$\f
10.设函数 (x)=sin dfrac (x)(3)+cos dfrac (x)(2), 求f(x)的周期.
[题目]如果 (cos x)=dfrac ({sin )^2x}(cos 2x), 则 f(x)= () )-|||-
函数f(x)=x-2sin(x)/(2)cos(x)/(2),则f(0)=( )A. 0B. 1C. -1D. $\sqrt{2}$
设lim_(x to 0) (sin 2x + xf(x))/(x^3) = 1,则lim_(x to 0) (2cos x + f(x))/(x^2) = (
2、设f`(x)为连续函数,则 int (sin )^2xf(cos x)dx-int cos xf(cos x)dx=
14.int(sin x+3cos x)/(2sin x+cos x)dx=____14.$\int\frac{\sin x+3\cos x}{2\sin x+
已知 (cos x)=(sin )^2x, 则 f(x)= __