If lim๐ฅโ2๐(๐ฅ)=3๐ฅ and lim๐ฅโ2๐(๐ฅ)=4๐ฅ2โ5, what is lim๐ฅโ2๐(๐(๐ฅ))?
Question
If lim๐ฅโ2๐(๐ฅ)=3๐ฅ and lim๐ฅโ2๐(๐ฅ)=4๐ฅ2โ5, what is lim๐ฅโ2๐(๐(๐ฅ))?
Solution
The given limits are lim๐ฅโ2๐(๐ฅ)=3๐ฅ and lim๐ฅโ2๐(๐ฅ)=4๐ฅ2โ5.
First, we need to find the limit of f(x) as x approaches 2. According to the given, lim๐ฅโ2๐(๐ฅ)=3๐ฅ. If we substitute x=2, we get f(2)=3*2=6.
Next, we need to find the limit of g(f(x)) as x approaches 2. Since we know that f(2)=6, we can substitute this into g(x) to get g(f(2))=g(6).
The given limit for g(x) is lim๐ฅโ2๐(๐ฅ)=4๐ฅ2โ5. But we need to find g(6), not g(2). So we can't directly use this limit. Instead, we substitute x=6 into the equation to get g(6)=4*6^2-5=139.
Therefore, lim๐ฅโ2๐(๐(๐ฅ))=139.
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