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If ("lim")(xvec0)(x^(-3)sin3x+a x^(-2)+b...

If `("lim")_(xvec0)(x^(-3)sin3x+a x^(-2)+b)` exists and is equal to 0, then `a=-3a n db=9/2` `a=3a n db=9/2` `a=-3a n db=-9/2` `a=3a n db=-9/2`

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