2m-12m-353 2m S 2m2m-2642 0 (m=1,2 2m2m-2642 2m+2m+12m-17531 o=Ld= 1=「sinx=1, 2 0 工工工 于是2m= 2m-12m-3531兀 2m2m-26422 2m2m-2642 2m+1 2m+12m-1753 上页, 2 1 4 3 6 5 2 2 2 3 2 2 1 2 0 I m m m m I m     − −  − =  , 3 2 5 4 7 6 2 1 2 2 2 1 2 2 1 1 I m m m m I m     − −  + + =  (m = 1,2, ) , 2 2 0 0  = =   I dx sin 1, 2 0 1 = =   I xdx , 2 2 1 4 3 6 5 2 2 2 3 2 2 1 2      − −  − =  m m m m I m . 3 2 5 4 7 6 2 1 2 2 2 1 2 2 1     − −  + + =  m m m m I m 于是