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VED1
          E\L-LOVELY-H\math17 -1 IInd 6-8-11 IInd 21-10-11 IVth 21-4-12 Vth 20-8-12



          vFkZ'kkfL=k;ksa dk xf.kr




                   uksV


                                    uksV~l  ;gk¡]   ,d dkYifud fLFkjkad gSA

                                          
                                                            
                                mnkgj.k 1-  x /1 +  x 2     dx 	
	2 y /1 +  y 2     dy 	dk gy fudkfy;sA
                                                            
                                          
                                gy % nksuksa rjiQ lekdyu djus ij
                                           ∫ (1 +  x 2 − 1/ 2 . xdx  , 2 (1 +  ∫  y 2 − 1/2 . ydy +  c
                                                  )
                                                                      )
                                        1       2 − 1/ 2         1       2 − 1/ 2
                                ;k        ∫ (1 +  x  )  . (2 ) xdx ,  −  ∫ (1 +  y  )  . (2 ) ydy +  c
                                        2                        2
                                ;k          1 +  x +  2  1 +  y 2  ,   ;gh gekjk fn;s gq, lehdj.k dk gy gSA

                                mnkgj.k 2-    0          ,    0          dk gy Kkr dhft,A
                                gy % bl lehdj.k dks ge fuEu izdkj Hkh fy[k ldrs gSaµ

                                                   y         e x
                                                        dy  ,   x  dx
                                                   1 +  y   1 +  e
                                nksuksa rjiQ vodyu djus ij
                                                                e
                                                  ∫ 1 + y y  dy  , ∫ 1 + x e x  dx +  constant


                                ;k               2        0    ,        0     0

                                ;k                          ,      .     0       0    /

                                ;k               0       0     ,    ;gh mi;qZDr lehdj.k dk gy gksxkA
                                17-1-2 le:i lehdj.k

                                                             xy
                                                     dy   f 1  (, )
                                ;fn ,d vodyu lehdj.k    =         osQ :i esa iznf'kZr fd;k tk;s rks og le:i lehdj.k dgykrh
                                                               y
                                                             x
                                                     dx   f 2  (, )
                                gSA ;gk¡           rFkk          1   rFkk   osQ leku dksfV osQ iQyu gSaA bl izdkj osQ lehdj.k dks gy djus


                                osQ fy, ge
                                                             dy        dv
                                         , "  j[k nsrs gSa] tgk¡  =  v +  x
                                                             dx        dx
                                ,slh fLFkfr esa fn;k gqvk lehdj.k vxzfyf[kr :i esa iznf'kZr fd;k tkrk gSµ
                                                        dv
                                                  v +  x    ,   "
                                                        dx

                                                        dv
                                      vFkkZr~         x     ,   "  2 "
                                                        dx
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