I want to show that a function x(a,b) is bounded by some value l, knowing that the extremes of the function occur when a = b = k is approached. The function blows up here.(adsbygoogle = window.adsbygoogle || []).push({});

Being a function of two variables, is it valid proof to set aEQUAL TOk, and then take the limit of this new x(b) as b -> k, getting l as the result?

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# Quick limit question

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