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Smitarani Swain posted an Question
January 30, 2022 • 00:39 am 30 points
  • IIT JAM
  • Mathematics (MA)

Dx ax (d+2 d+ 1)y =x cos x o sin x

dx ax (D+2 D+ 1)y =x cos x O Sin X .please solve the equation in non -homogeneous linear equations with constant coefficients

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  • Anonymous User best-answer

    check attachment

    cropped8213670676667791462.jpg
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    when you put cosx value then how to solve this

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    using the rules of x²cosx

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    what's ur dabut

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    no doubt

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    but I told you cosx=e(to the power ix) +e(to the power -ix) /2

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    but you told read first theory then solve question 😥😥

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    I solve for e^ix and taking real part

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    this is method for solving these types question

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    yes I told this formula

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    cosx is real part of e^ix so solve only for e^ix and taking real part we get pl for x² cos. x²e^ix= x²cosx+ix² sinx it's real part x² cosx

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