x²/4+y²/2=1的焦点是(√2,0)直线的斜率为k=tan30°=√3/3∴直线方程为：y=√3/3(x-√2)与椭圆x²+2y²=4联立得：x²+2/3(x-√2)²=4,即：5x²-4√2x-8=0∴x1+x2=4√2/5∴y1+y2=√3/3(...