直线L过P(-2,1)且斜率k(k>1),将直线L饶P点按逆时针(题目看补充)直线L过P(-2,1)且斜率k(k>1),将直线L饶P点按逆时针方向旋转45度得直线M,若直线L和M分别与Y轴交于Q,R两点,则当k为何值时,三角形PQR面积
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![直线L过P(-2,1)且斜率k(k>1),将直线L饶P点按逆时针(题目看补充)直线L过P(-2,1)且斜率k(k>1),将直线L饶P点按逆时针方向旋转45度得直线M,若直线L和M分别与Y轴交于Q,R两点,则当k为何值时,三角形PQR面积](/uploads/image/z/12148582-22-2.jpg?t=%E7%9B%B4%E7%BA%BFL%E8%BF%87P%28-2%2C1%29%E4%B8%94%E6%96%9C%E7%8E%87k%28k%3E1%29%2C%E5%B0%86%E7%9B%B4%E7%BA%BFL%E9%A5%B6P%E7%82%B9%E6%8C%89%E9%80%86%E6%97%B6%E9%92%88%28%E9%A2%98%E7%9B%AE%E7%9C%8B%E8%A1%A5%E5%85%85%29%E7%9B%B4%E7%BA%BFL%E8%BF%87P%28-2%2C1%29%E4%B8%94%E6%96%9C%E7%8E%87k%28k%3E1%29%2C%E5%B0%86%E7%9B%B4%E7%BA%BFL%E9%A5%B6P%E7%82%B9%E6%8C%89%E9%80%86%E6%97%B6%E9%92%88%E6%96%B9%E5%90%91%E6%97%8B%E8%BD%AC45%E5%BA%A6%E5%BE%97%E7%9B%B4%E7%BA%BFM%2C%E8%8B%A5%E7%9B%B4%E7%BA%BFL%E5%92%8CM%E5%88%86%E5%88%AB%E4%B8%8EY%E8%BD%B4%E4%BA%A4%E4%BA%8EQ%2CR%E4%B8%A4%E7%82%B9%2C%E5%88%99%E5%BD%93k%E4%B8%BA%E4%BD%95%E5%80%BC%E6%97%B6%2C%E4%B8%89%E8%A7%92%E5%BD%A2PQR%E9%9D%A2%E7%A7%AF)
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