∫(2-sec^2(x))^1/2 d(sec x) [上限为π/4下限为0]

∫sec^2x/(2+sec^2x)d(x)不定积分 ∫(2-sec^2(x))^1/2 d(sec x) [上限为π/4下限为0] ∫secx/sec^2x-1 dx ∫ sec^2 x dx ∫1/x^2*sec^2(1/x) ∫1/根号x*sec^2(1-根号x)dx ∫sec^2 x / √ tan x +1 dx ∫（sec^2x+sinx)dx 化简sec(x)^2-1如题, sec x -1 ~ 2x^2错了 是sec x-1 ~ 1/2(x^2) ∫1/(sec^2x+1)dx等于多少? 求积分∫(sec^2x/根号(tanx-1))dx ∫[(sec^2x-1)secx]dx= ∫sec^4x dx ∫sec^2x tan^2x dx 求(sec x)^2积分, sec^2(7x)积分 tan（x)sec^2(x)dx,secx的导是secxtanx就是sec(x)d(sec(x)) 但tanx的导是sec^2(x）就是tanxd(tanx)了? 高数(sec^2.x-1)求导2sec^2.xtanx