{ "name": "Parametric Equations", "order": 10, "challenges": [ { "id": "59a5801209a6acac5983b572", "title": "Curves defined by parametric equations", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] }, { "id": "59a5801209a6acac5983a727", "title": "Calculus with parametric curves", "description": [ "" ], "challengeSeed": [ "" ], "tests": [ "" ] } ] }