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parameters Function
In the picture you can see the Function. is known that a,b are Positive.
who from the Following Finding are correct ?(can be more than one )
1)Y=a/b is an Horizontal Asymptotic for the f Graph
2)there is no any vertical Asymptotic for this Function
3)f(x) are Continuous for any x
4)f(x) are Rising for any x
thanks.

Since the denominator is always positive and $\displaystyle e^{x}$ is continous everywhere, f(x) is continuous for any x. So, 3) is correct.
How about trying the others yourself?

well tell me if i correct if a,b is positive and i know e^x are always Rising up so i think 4 is correct.
can you help me to find the Derivative ? than i will can find if 1 and 2 are correct.
I just know that for the Function e^x there is no any vertical Asymptotic but here is not the same case Exactly.
thank you.