如图,直线Y=X+3与x轴,y轴分别交于A,B点,与Y=K/X(X<0) 的图象交于C,D...答:y = x + 3 = k/x x² + 3x - k = 0 x₁ = [-3 - √(9 + 4k)]/2, x₂ = [-3 + √(9 + 4k)]/2 按图C(x₁, x₁ + 3), D(x₂, x₂ + 3)E(e, e')(e + x₁)/2 = -3, e = -6 - x₁(e'...
如图,直线yx+3与x轴、y轴交于A、B两点,与双曲线y=k/x交于E点,OF//BE...答:= 5[(x1 + x2)² - 4x1*x2]= 5(16 + 2k) = 5 k = -8 这里只考虑第一象限的情况。从A向x轴作垂线,垂足D 令直线斜率为k, 方程为y = kx, k > 0 y = kx = 1/x, x = 1/√k A(1/√k, √k), D(1/√k, 0)y = kx = 4/k, x = 2/√k E(2/√k,...