30. Find a linear differential operator (of lowest order) that annihilates the given function: f(x) = x³ + x³ cos x - 3x sin 3x (A) Dª(D² + 1)³(D² +9)² (B) D¹(D²+1)¹(D² + 9)² (C) D¹(D² - 1)³(D² +9)² (D) D¹(D²+1)³(D² - 9)²
30. Find a linear differential operator (of lowest order) that annihilates the given function: f(x) = x³ + x³ cos x - 3x sin 3x (A) Dª(D² + 1)³(D² +9)² (B) D¹(D²+1)¹(D² + 9)² (C) D¹(D² - 1)³(D² +9)² (D) D¹(D²+1)³(D² - 9)²
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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