Question 43
MediumOriginal questionWhat is the order of the differential equation of all parabolas , whose axis is the -axis, and arbitrary?
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
The family has two arbitrary constants, and .
Removing both takes two differentiations: the order is 2.
Worth noting
1 counts only ; the vertex moves too, so is a second constant.
- Concept
- Order from the number of constants
- Typical timeTypical
- 90 s
- Your timeYours
- —
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