A. 0
B. $\frac{1}{2}$
C. $\frac{\sqrt{2}}{2}$
D. $\frac{\sqrt{3}}{2}$
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
函数f(x)=x-2sin(x)/(2)cos(x)/(2),则f(0)=( )A. 0B. 1C. -1D. $\sqrt{2}$
设f(x)的原函数为2x+3sin x,则f(x)(,,,,,,)A、(x)^2+3cos xB、2+3cos xC、(x)^2-3cos xD、2-3cos
已知 (cos x)=(sin )^2x, 则 f(x)= __
[题目]如果 (cos x)=dfrac ({sin )^2x}(cos 2x), 则 f(x)= () )-|||-
[单选题]设f′(cos2x)=sin2x,则f(x)等于()A . cosx+1/2cos2x+cB . cos2x-1/2cos4x+cC . x+(1/2)x2+cD . x-(1/2)x2+c
求下列函数的导数:f( x )=({x)^2}+2x+1f( x )=xln xf( x )=(sin x)/(({x)^2)+2x+1}f( x )=({e)
[单选题]已知f’(x)=sec2x+sin2x,且f(0)=3/2,则f(x)等于().A . B . C . D .
10.设函数 (x)=sin dfrac (x)(3)+cos dfrac (x)(2), 求f(x)的周期.
[针对练1] 已知 (cos x)=(sin )^2x, 则 f(x)=-|||-__