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Indian Navy AA (Artificer Apprentice) Formation — practice questions

Explore 1 free Formation questions in Indian Navy AA (Artificer Apprentice) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Formation questions and exercises with answers

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The differential equation of the family of straight lines $y = mx + c$ (with $m, c$ arbitrary) is:Read the answer and worked solution →

Worked practice questions

The differential equation of the family of straight lines $y = mx + c$ (with $m, c$ arbitrary) is:

  1. $d^2y/dx^2 = 0$
  2. $dy/dx = 0$
  3. $d^2y/dx^2 = m$
  4. $y = x\,dy/dx$
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Correct answer: A. $d^2y/dx^2 = 0$

Two arbitrary constants $m, c$ ⇒ second-order DE. **Differentiate twice:** $dy/dx = m$, then $d^2y/dx^2 = 0$. Every straight line has zero curvature.

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