第四章高等數(shù)學試題及答案-在線瀏覽
2025-02-26 08:56本頁面
【正文】 c c os11 22 9. ??? 211 xdx 解 ???? ????????? dttdttt d tttxxdx )2s e c211()c o s1 11(c o sc o s1 1s i n11 22 令 .11a rc s i nc os1 s i n2t a n 2 CxxxCtttCtt ???????????? 六、計算下列不定積分 : 1． ??? ????? x dxxxxxdx dxx 2c os212c os212c os212s i n .2s in412c os21 Cxxx ???? 2. ? ??? xxdxxx dx a rc s i na rc s i na rc s i n d ???? dxxxxx 21arc sin Cxxx ???? 21a r c si n . 3. ??? ??? xdxxxx d xx d xx ln31ln31ln31ln 3332 Cxxxdxxxx ????? ? 332391ln3131ln31 4. ???????? dxxxxxx d xx d xx 23332 1 131a rc t a n31a rc t a n31a rc t a n 班級 姓名 學號 7 ????????? 2232223 )1 11(61a rc t a n31161a rc t a n31 dxxxxdxxxxx Cxxxx ????? )1l n (6161a rc t a n31 223. 5. ???????? dxxxxxxdxx 222 1 2)1l n ()1l n ( ? ????? dxxxx )1 11(2)1l n ( 22 .a r c t a n22)1l n ( 2 Cxxxx ????? 6. xdxe x cos? ? 解 因為 ?? ?? ?????? ????? x d xexex d exexdex d xe xxxxxx s i ns i ns i ns i ns i nc o s ?? ????? ????? xxxxx x d exexexdexe c o sc o ss i nc o ss i n ? ??? ??? x d xexexe xxx c o sc o ss i n , 所以 CxxeCxexex d xe xxxx ?????? ????? )c o s(s i n21)c o ss i n(21c o s. 7. ????? ??????? xxdxx d xx d xxdxxxx d xx t a n21s e c)1(s e ct a n 2222 Cxxxxx d xxxx ????????? ? |c o s|lnt a n21t a nt a n21 22 8. ??? ?? ttx detdtettxdxe 223 333 令 ?? ???? tttt t d eetdtteet 6363 22 ???? dteteet ttt 663 2 Ceteet ttt ???? 663 2 Cxxe x ???? )22(3 33 23 . 9. ?? dxx x)ln(ln ?? ?? xdxxxxxdx lnln 1ln)l n(l nlnln)l n(l n cxxx ??? ln)ln (lnln 10.
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