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anonymous

  • 5 years ago

y''=8*y*3 I am supposed to solve this equation by multiplying both sides of the equation with y' , but I don't know what to do thereafter The answer shall be: y=1/(C+-2x) But I don't know how to get it, can anybody tell me the steps?

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  1. anonymous
    • 5 years ago
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    I just don't quite see what to do just after having multiplied with y' , can you give me some hints?

  2. anonymous
    • 5 years ago
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    what isthe question, is it 8y^3?

  3. anonymous
    • 5 years ago
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    The question is the differential equation y''=8y^3

  4. anonymous
    • 5 years ago
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    You can solve using laplace transforms

  5. anonymous
    • 5 years ago
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    or actually nevermind you aren't given initial conditions

  6. anonymous
    • 5 years ago
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    ok, you just substitute v=y' then using chain rule y''=v*dv/dy. Sub everythign back into original and you get a separable equation with y's and v's

  7. anonymous
    • 5 years ago
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    ok, thank you very much

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