若 f(sinx+1/sinx)=csc^2x-cos^2x,求f(x)
请教 g(sinx)=cos^2x+sinx-1 求g(x),请写详细步骤.
f ' (sinx)=cos^2x,求f(x)
求函数y= cos^2x+ sinx (| x |
sinx+cosx/sinx-cosx=2 求sinx/cos^3x +cosx/sin^3x
tana=根号2,求[2cos^2(x/2)-sinx-1]/(sinx+cosx)的值
已知tanx=2 ,求 (1) (2sinx - cos x )/(cosx +sinx )
求函数y=(2sinx-cos^2x)/(1+sinx)的最大值和最小值
cos(x)^2+sinx 求范围.
y=cos^2x+sinx+1(|x|
sin^2x+2sinxcosx-3cos^2x=1 求sinx
(1)已知sinx+cosx=根号2/2,求sin^4x+cos^4x