证明arctanx-1/2arccos(2x/(1+2x^2))=Л/4
证明arctanx-1/2arccos(2x/(1+2x^2))=Л/4
arccos(2x-1)
证明sin(arctanx)=x/根号(1+x^2)
证明恒等式:arcsin x+arccos x=π/2(-1≦x≦1)
arctanx+arbsin(2x/1+x2)=兀怎么证明?
如何证明arctanx=arcsinx/(1+x^2)^0.5
证明arctanx=arcsinx/(1+x^2)^0.5
证明当x>0时,arctanx+1/x>π/2
当x>0时,证明:arctanx+1/x>π/2,
证明arctanx=0.5arctan(2x/(1-x^2)),|x|
证明arctanx+arctan1/x=兀/2 (x>0)
证明当x>0,arctanx+arctan1/x=π/2