Class CBSE Class 12 Mathematics Differential Equations Q #643
KNOWLEDGE BASED
ANALYZE
1 Marks 2024 AISSCE(Board Exam) MCQ SINGLE
The order of the differential equation \(\frac{d^{4}y}{dx^{4}}-sin(\frac{d^{2}y}{dx^{2}})=5\) is:
(A) 4
(B) 3
(C) 2
(D) not defined
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Correct Answer: D

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Step-by-Step Solution

  1. The order of a differential equation is the highest order derivative present in the equation.
  2. However, the order is defined only when the differential equation is a polynomial equation in derivatives.
  3. In the given equation, \(\frac{d^{4}y}{dx^{4}}-sin(\frac{d^{2}y}{dx^{2}})=5\), the term \(sin(\frac{d^{2}y}{dx^{2}})\) is a non-polynomial function of the derivative \(\frac{d^{2}y}{dx^{2}}\).
  4. Therefore, the order of the differential equation is not defined.

Correct Answer: not defined

AI Suggestion: Option D

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Pedagogical Audit
Bloom's Analysis: This is an ANALYZE question because the student needs to analyze the given differential equation to determine its order, considering the presence of a non-polynomial function of a derivative.
Knowledge Dimension: CONCEPTUAL
Justification: The question requires understanding the concept of the order of a differential equation and recognizing when it is not defined due to the presence of a non-polynomial function of a derivative.
Syllabus Audit: In the context of CBSE Class 12, this is classified as KNOWLEDGE. The question directly tests the understanding of the definition of the order of a differential equation, a concept covered in the textbook.