For ๐(๐ฅ)=๐๐ฅ and ๐(๐ฅ)=lnโก(๐ฅ+5), find (๐โ๐)(๐ฅ)
Question
For ๐(๐ฅ)=๐๐ฅ and ๐(๐ฅ)=lnโก(๐ฅ+5), find (๐โ๐)(๐ฅ)
Solution
To find the composition of two functions, we substitute the output of the first function (f(x)) into the second function (g(x)).
Given ๐(๐ฅ)=๐^๐ฅ and ๐(๐ฅ)=lnโก(๐ฅ+5), we want to find (๐โ๐)(๐ฅ), which means we want to find g(f(x)).
Step 1: Find f(x), which is given as e^x.
Step 2: Substitute f(x) into g(x). So wherever we see 'x' in g(x), we replace it with f(x).
So, g(f(x)) = ln(f(x) + 5) = ln(e^x + 5).
So, (๐โ๐)(๐ฅ) = ln(e^x + 5).
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