(d)2M8=0,RA.a +ga/2 X3a/4=0, RA=3qa8, RB=ga/8, @a=3ga/8 Qc=3qa8-ga2=qa8,MA=0,Ms=0+0.5.(3q8+0).3a/8=9qa/128 Mc=MF-05 qa/8.a/8=ga/16 MB=Mc-gal8 Xal=0 nyla M 9q28 3m/ (e)gmax=p Mmax=P Q 7 +) 5p2 +4 x Q + 3m/2a (d)  MB=0 ,-RA. a +qa/2×3a/4=0 , RA =3qa/8， RB = qa/8， QA =3qa/8， QC =3qa/8-q.a/2=- qa/8 ，MA = 0 ，MF =0+0.5.（3qa/8+0）.3a/8=9qa2 /128 MC =MF – 0.5.q.a/8.a/8 =qa2 /16 MB =MC –qa/8×a/2 =0 () e 7 max 2 Q p = 5 max 2 M p = a x 2 qa /2 3qa /22 M - x M - - 3m/2a + m/2 m 3m/2 x Q + - 3qa/8 qa/8 x M + 9qa /128 2 Q + x - - p 7p/2 5p/2 x - + 5pa/2 pa M x M 4pa/3 5pa/3 +