如图,已知抛物线y =a(x-1)2+3根号3(a不等于0
问题描述:
如图,已知抛物线y =a(x-1)2+3根号3(a不等于0
答
(1),∵点A在抛物线y=a(x-1)²-3√3上∴把点A(-2,0)代入,得0=a(-2-1)²-3√3解得,a=√3/3(2)由(1)可得,a=√3/3∴y=√3/3(x-1)²-3√3∴D(1,3√3)根据勾股定理可求的,AD=6∵AD//OM∴当AD=OM时,...嗯嗯。是这个那求采纳啊亲