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lilMissMindset

  • 3 years ago

DIFFERENTIAL EQUATION: help please, anybody. (D^2 +4)y =4sin^2 (x)

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  1. hartnn
    • 3 years ago
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    r^2 + 4 =0 r = \(\pm\)2i no repeated root...so form will be a sin x+ b cos x

  2. hartnn
    • 3 years ago
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    and not Acosx+Bsinx+Cxcosx+Dxsinx

  3. lilMissMindset
    • 3 years ago
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    yes, i got the answer now. :D yay!

  4. hartnn
    • 3 years ago
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    :D

  5. hartnn
    • 3 years ago
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    i still wonder , how u got x in the answer..

  6. lilMissMindset
    • 3 years ago
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    instead of using sin^2 x, i used 1/2 - 1/2*cos2x

  7. hartnn
    • 3 years ago
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    ok, so form will be asin x + bcos x +cx ?

  8. lilMissMindset
    • 3 years ago
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    yeps

  9. hartnn
    • 3 years ago
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    :)

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