令z = √x,x = z²∫ arcsin√x dx= ∫ arcsinz d(z²)= z²arcsinz - ∫ z²/√(1 - z²) dz令z = sinθ,dz = cosθ dθ= z²arcsinz - ∫ sin²θ/|cosθ| * (cosθ dθ)= z²arc...