Performance · Worldwide
Est. downloads / month · WW
<5K
Below chart threshold
Est. revenue / month · WW
<$5K
Below chart threshold
Rating · WW
3.7★
203 ratings
Chart position
Apple's Top Free chart — free apps ranked by recent downloads.
Ratings count — US
Not enough history yet.
Listing
让椭圆、抛物线、双曲线「动」起来——从参数方程到生活应用，一图看懂圆锥曲线。 学圆锥曲线，最难的不是背公式，而是把方程和图形真正对应起来。
No rank history yet for this selection.
