Only the letter g) and i know it’s infinity - infinity but i don’t know how to modify it to be able to find the answer

You have to use some properties of logarithms. I'm assuming the logarithm is real-valued, in which case the following hold:




for real and all real .

So we can write






In taking the limit, we're considering as it gets arbitrarily large. We know that for , is continuous. This means we can pass the limit through the logarithm:



so now we're only concerned with the limit of a rational function. The leading terms in the numerator and denominator both have the same power, so we only need to consider their coefficients. In other words,



when , and so the limit is the same as