证明当x>0,arctanx+arctan1/x=π/2

证明当x>0,arctanx+arctan1/x=π/2 证明恒等式：arctanx+arctan1/x=π/2(x>0) 证明arctanx+arctan1/x=兀/2 (x>0) 证明 arctanx+arctan1/x=π/2 (x>0) 用中值定理 点样证明arctanx+arctan1/x=pi/2 证明当x>0时,arctanx+1/x>π/2 当x>0时,证明：arctanx+1/x>π/2, 求证恒等式：arctanX+arctan1/X=派/2 证明：当x＞0时,1/x＞arctanx-π/2 证明：当x＞0，有不等式arctanx+1x 证明当x趋近于0时,arctanx~x 证明：当X→0 时,arctanX~X