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For ๐‘“(๐‘ฅ)=๐‘’๐‘ฅ and ๐‘”(๐‘ฅ)=lnโก(๐‘ฅ+5), find (๐‘”โˆ˜๐‘“)(๐‘ฅ)

Question

For ๐‘“(๐‘ฅ)=๐‘’๐‘ฅ and ๐‘”(๐‘ฅ)=lnโก(๐‘ฅ+5), find (๐‘”โˆ˜๐‘“)(๐‘ฅ)

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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‘“(๐‘ฅ)=๐‘’^๐‘ฅ and ๐‘”(๐‘ฅ)=lnโก(๐‘ฅ+5), we want to find (๐‘”โˆ˜๐‘“)(๐‘ฅ), 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, (๐‘”โˆ˜๐‘“)(๐‘ฅ) = ln(e^x + 5).

This problem has been solved

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