Question 112Asked in BPSC TRE 2.0 (2023) Mathematics Class 9-10 (Re-exam)

Let y be the solution of the initial value problem d²y/dx² + y = 6 cos 2x, y(0) = 3, y′(0) = 1मान लीजिए y प्रारंभिक मान समस्या

Let y be the solution of the initial value problem d²y/dx² + y = 6 cos 2x, y(0) = 3, y′(0) = 1 Let the Laplace transform of y be F(s). Then the value of F(1) is
मान लीजिए y प्रारंभिक मान समस्या d²y/dx² + y = 6 cos 2x, y(0) = 3, y′(0) = 1 का समाधान है। माना कि y का लाप्लास रूपांतरण F(s) है। तब, F(1) का मान है
  1. A17/517/5
  2. B13/513/5
  3. C11/511/5
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (B) 13/513/5

Explanation

Transforming: (s² + 1)F = 3s + 1 + 6s/(s² + 4). At s = 1, 2F(1) = 4 + 6/5 = 26/5, so F(1) = 13/5.रूपांतरण करने पर (s² + 1)F = 3s + 1 + 6s/(s² + 4)। s = 1 पर 2F(1) = 4 + 6/5 = 26/5, अतः F(1) = 13/5।

From BPSC TRE 2.0 (2023) Mathematics Class 9-10 (Re-exam) — Previous Year Paper

This is question 112 of BPSC TRE 2.0 (2023) Mathematics Class 9-10 (Re-exam) — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.