在平面直角坐标系中,已知抛物线y=-x²+bx+c与x轴交于点A,B(A左B右),与Y轴的正半轴交于点C,顶点为E,1:若b=2,c=3,求此抛物线顶点E的坐标.2:将(1)中的抛物线向下平移,若平移后,在四边形ABE
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 20:51:45
![在平面直角坐标系中,已知抛物线y=-x²+bx+c与x轴交于点A,B(A左B右),与Y轴的正半轴交于点C,顶点为E,1:若b=2,c=3,求此抛物线顶点E的坐标.2:将(1)中的抛物线向下平移,若平移后,在四边形ABE](/uploads/image/z/9939621-21-1.jpg?t=%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D-x%26sup2%3B%2Bbx%2Bc%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%2CB%EF%BC%88A%E5%B7%A6B%E5%8F%B3%EF%BC%89%2C%E4%B8%8EY%E8%BD%B4%E7%9A%84%E6%AD%A3%E5%8D%8A%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9C%2C%E9%A1%B6%E7%82%B9%E4%B8%BAE%2C1%EF%BC%9A%E8%8B%A5b%3D2%2Cc%3D3%2C%E6%B1%82%E6%AD%A4%E6%8A%9B%E7%89%A9%E7%BA%BF%E9%A1%B6%E7%82%B9E%E7%9A%84%E5%9D%90%E6%A0%87.2%EF%BC%9A%E5%B0%86%EF%BC%881%EF%BC%89%E4%B8%AD%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BF%E5%90%91%E4%B8%8B%E5%B9%B3%E7%A7%BB%2C%E8%8B%A5%E5%B9%B3%E7%A7%BB%E5%90%8E%2C%E5%9C%A8%E5%9B%9B%E8%BE%B9%E5%BD%A2ABE)
xVSWWn3"u(A/,h[3N>`ob_IG*]>/ܽC2͇4=ys@|<掾(<ÛYmkF/U!NWymnC}WާdGø=RҨS+{jeI|e}r6ŷ@?w\'mnS-W,Y[7AY`CjǏ=K/%) 9~;
ڀq
mj}&PeA(]KL0績\
M$iFmx~dm|ŵW|p@^AL7k <5<bÜi櫁}II$;#?wPAH3<>rE#3:Cc1ׯ#ae]^+9Ε?*G}? /%#WK /VxIR¢$HѰ$D0\(*w8@
&Xz-,Ѩ?,F|TuEp<r%`+
رD^'b.2낝%<3y\~paRr@P+B\-%s1˼b!9FdhiiZt;nS|k71m
rpe;Z_dDVPn
݁c67%%Y67,C,,QSg_7hAh`Y W.`,č-ѭ%qYAHJDˏI@H|eRPIu<.Z
lCv[jSϳF@"n7L,#QRʕ^_tR?RyUGHy1]̵iHu6
ؽc