Suppose f and g are continuous functions such that g(2)=6 and \lim[3f(x

Harlen Pritchard

Harlen Pritchard

Answered question

2021-09-21

Let's say that f and g are continuous functions, and g(2)=6 and lim[3f(x)+f(x)g(x)]=36 Find f(2),x2

Answer & Explanation

crocolylec

crocolylec

Skilled2021-09-22Added 100 answers

Let h(x)=3f(x)=f(x)g(x) 
Since f(x) and g(x) are continuous, by theorem 4 h(x) is continuous 
That means limx2h(x)=h(2) 
limx23f(x)+f(x)g(x)=3f(2)+f(2)g(2) 
Keep in mind: Given that  g(2)=6 and the maximum in the RHS is 36
36=3f(2)+f(2)6 
36=9f(2) 
4=f(2) 
Result: f(2)=4

madeleinejames20

madeleinejames20

Skilled2023-05-12Added 165 answers

Answer: 4
Explanation:
We know that g(2)=6 and limx2(3f(x)+f(x)g(x))=36. We're asked to find f(2).
Let's start by manipulating the limit expression using algebraic operations:
limx2(3f(x)+f(x)g(x))=36
We can factor out f(x) from both terms:
limx2(f(x)(3+g(x)))=36
Since the limit is taken as x approaches 2, we can substitute x=2 into the expression:
f(2)(3+g(2))=36
Substituting the known value g(2)=6:
f(2)(3+6)=36
Simplifying further:
9f(2)=36
Now, we can solve for f(2) by dividing both sides of the equation by 9:
f(2)=369=4
Therefore, the value of f(2) is 4.
nick1337

nick1337

Expert2023-05-12Added 777 answers

Given that f and g are continuous functions, and g(2)=6, we are given that limx2(3f(x)+f(x)g(x))=36. We need to find the value of f(2).
Let's start by manipulating the limit expression using algebraic operations. We can rewrite the expression as:
limx2(f(x)(3+g(x)))=36
Since the limit is taken as x approaches 2, we can substitute x=2 into the expression:
f(2)(3+g(2))=36
Substituting the given value g(2)=6:
f(2)(3+6)=36
Simplifying further:
f(2)(9)=36
Dividing both sides of the equation by 9:
f(2)=369=4
Therefore, the value of f(2) is 4.
Don Sumner

Don Sumner

Skilled2023-05-12Added 184 answers

We are given that f and g are continuous functions. Additionally, g(2) = 6. We need to find f(2) given the limit:
limx2(3f(x)+f(x)g(x))=36
Since we are interested in the behavior as x approaches 2, we will rewrite the limit expression in terms of x approaching 2:
limx2(3f(x)+f(x)g(x))=limx2f(x)(3+g(x))=36
We can now use the limit definition of continuity to evaluate this expression. We know that g(2) = 6, so as x approaches 2, g(x) approaches 6. Therefore, we have:
limx2f(x)(3+g(x))=limx2f(x)(3+6)=limx29f(x)=36
Now, we can simplify the expression:
limx29f(x)=36
Dividing both sides by 9:
limx2f(x)=369=4
Using the limit definition of continuity, we can conclude that f(2) = 4.
Therefore, the solution to the problem is f(2) = 4.

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