Hi, I would like know if it is possible to tell which function is better over another?(adsbygoogle = window.adsbygoogle || []).push({});

For instance, I have two functions:

(i) f(x,y)=exp(a*x) * exp(b*y)

(ii) f(x,y)=a(exp(x)) * b(exp(y))

I would like to know the characteristics of both the functions which make it better/less better over another. (e.g.: the effect of a and b towards the results; the complexity or etc.)

I've tried plotting the functions in 3D graphs, but didn't help much.. Please guide.

Thanks in advance!

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# Functions comparison

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