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The degree of (d²y/dx²)² + (dy/dx)³ + y = 0 is
A1
B2
C3
D5
Answer & Solution
Correct answer: B. 2
1. Degree is the power of the highest derivative when written in polynomial form.
2. Highest derivative is d²y/dx², raised to power 2.
3. Hence degree = 2.
4. Order = 2 as well; do not confuse the two.
_Source: Maharashtra Balbharati Std XII Mathematics & Statistics (Commerce), Ch 9 "Differential Equations", §9.1 ¶§9.1_
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