参数方程~~
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/10 22:07:09
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解题思路: 画图,找清曲线的范围(端点的坐标,直线的倾斜角、斜率),然后利用直线参数方程的几何意义,转化为三角函数、再换元转化为二次函数的值域。综合性太强;数形结合非常重要。
解题过程:
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最终答案:略
解题过程:
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最终答案:略