如图,二次函数y=x^2-2和正比例函数y=x交于两点C,D,直线CD交y轴于A.在y轴上有一动点P(0,p)求当∠CA

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  • tan CPO = 1/(p+1),tan DPO = 2/(p-2),p = -4时二角相等y = ax^2 + c 与 y = kx 的交点为C(x1,kx1),D(x2,kx2),x1 = (k-sqrt(k^2 - 4ac))/2a,x2 = (k+sqrt(k^2 - 4ac))/2a (sqrt表示根号),要二角相等,q = 2kx1x2/(x1...