(4) 1、h+c.(5)n|xe|-n1+ re+c 作业23 (1) 3 arcta n+c.(2)1ln +c.(3)n(x-1+√x2-2x+3) (4)arcsin 5r+c.(5)nx+r2-3+c.(6)Inlcscx -cotrI+c. (7)InI secr tanr +c. (8)InI sinx I +c. (9)arctan x+1 √z 2 、(1)lx+√x2-1-l+√x+1l+c.(2)rce+c.(3)x,=+ c.(4)√x2-9-3a arcos (5)√2x-ln|1+√2x|+c.(6/ arcsIn 1)2+c.(8)2 arcsin√x 1+ 3 三、(1)nyx1+c-1+c.(2 )arcsin-√a-x2+c.(3)2√x+1-3 1+e2+1 x+1+6x+1-6m(x+1+1)+c.(4)1(3x+1)3+1(3x+1)3+c (5)2-In(1+e")+c.(6)arctane'+c.(7)Vi+e +lIn (8) (arctan)2+c.(9) 2 arcsin 2+c.(10)y1-x2 arcsine t 四、(1)分别为-acsn1+c;aras1+c;arca√x-1+c.(2)-hm(1+ ++1)+c.(3)3(1+lnx)2-2(1+lnx)2+c.(4) Inx √ arctan 作业24 (1)xlnx-x+c.(2)xarctanx-ln(1+x2)+c.(3)xarcsinx+√1-x2+ c.(4)xf(x)-f(x)+c.(5)-2x2e-e2+c. (1)Inr.I-2Inr.r+2x +c.(2)rtanr In I cosr|-t+c (3)3rarctanr-6x+6n(1+x')+c.(4)-4Ioos2I+ 8sin2I+c.()osx