()cnc 小adx-a=-9-ko小c。 (Jcotd sinx dx-4x-J4r-小-axem0-∫mxan0 =一n儡c=如温C=ec+m+c (4)[csex dx-mnlcscx-cotxl+c 1cxtC 2 (2) Jowxdx-j-e2ddx-小}-os2x+e2对d =j日-cos2x+0+eos4xx=原-os2x+号cos4]d =爱x-}an2x+0m4x+C c 6
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2 g4x=-4=-o+0=-ae+0+c nc曲骑d=可a对或h对=+c. 1-inx (3)0品4x-血对-2am+c 《w后器-管hac j区中dx=jm+7ai+元)=-inco+7+c, V1+x2 6 ,d原y jJ/L对dx以]兰Jfd=R+C=+C 7
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