考研数学公式大全(考研必备)

= /(x),1\rdx ax /(x) = 0<A\rë„ÝÙ'ìíʂ²W·è´º«³G\r(*)y" + py' + qy = 0 , PJp,q]&^\r_`a0\r16 bcd 0(A)r2 + pr + q = 0 , P J h i\nj&k]&lmnM(*)Jo/ y\nj&;\r26_b(A)\nqrst,u\r36swx\nyz{|}~ b(*)\n:\r(*)\n\r€2\n\rqry‚ƒs(p2.4q>0) y = c er'x +c eriX\r} 2\rqr‚ƒs(p2.4q = 0) y = (C)+c x)er,x\r2\r‰Š‹Œs(p2.4q<0) y = * (Cj cos ‘ + Q sin 0x)\rr\=a + i/3, r2 =a-i/3\rCC P 9 u P\r2 2\rë„ÝÙ'îìíʂ²W·è\ry" + py' + qy = /(x), p •]&\r/(x)=/e.(x)—4]&;\r/(x) = e"'˜™(x)cos5 + ›,(x)sin œ —\r^ ^ p " # $ O b © b 6789: `p\r,539 0@P\r?\r; < ? * -100./10 - 200./30 \rž 661\r I0@P`Ip   ? I\nP`I\r? ? I