Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
The order and the degree of the differential equation $\left[1+\left(\frac{d y}{d x}\right)^{3}\right]^{\frac{7}{3}}=7\left(\frac{d^{2} y}{d x^{2}}\right)$ are respectively
MathematicsDifferential EquationsMHT CETMHT CET 2020 (20 Oct Shift 2)
Options:
  • A 2,3
  • B 3,3
  • C 2,2
  • D 3,2
Solution:
1401 Upvotes Verified Answer
The correct answer is: 2,3
We have $\left[1+\left(\frac{d y}{d x}\right)^{3}\right]^{\frac{7}{3}}=7\left(\frac{d^{2} y}{d x^{2}}\right)$ Raising both sides to power of 3 , we get
$$
\left[1+\left(\frac{d y}{d x}\right)^{3}\right]^{7}=(7)^{3}\left(\frac{d^{2} y}{d x^{2}}\right)^{3}
$$
Hence order $=2$, degree $=3$

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.