For what values of [math]a[/math] and [math]b[/math] is [math] lim_{xto 0} left (frac{tan {2x} }{x^3} + frac{a}{x^2} + frac {sin {bx} }{x} right) = 0 [/math] ?
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For what values of [math]a[/math] and [math]b[/math] is [math] lim_{xto 0} left (frac{tan {2x} }{x^3} + frac{a}{x^2} + frac {sin {bx} }{x} right) = 0 [/math] ?
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