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anonymous
 one year ago
Any help would be great:
Function Notation
If ƒ(x ) = x 2 + 1 and g(x ) = 3x + 1, find 2 · ƒ(4).
anonymous
 one year ago
Any help would be great: Function Notation If ƒ(x ) = x 2 + 1 and g(x ) = 3x + 1, find 2 · ƒ(4).

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misty1212
 one year ago
Best ResponseYou've already chosen the best response.2are you looking for \[2\times f(4)\]?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Those values are subbed into the expression

misty1212
 one year ago
Best ResponseYou've already chosen the best response.2there is not \(g\) in this your main job is to find \[f(4)=4^2+1\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.2then multiply the result by 2

misty1212
 one year ago
Best ResponseYou've already chosen the best response.2\[f(x)=^2+1\\ f(4)=4^2+1=17\\ 2f(4)=2\times 17\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So 34. Why would you not add g of x?

misty1212
 one year ago
Best ResponseYou've already chosen the best response.2you asked for \[2f(4)\]right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That is where I reached my snag there was no x value so I assumed you simplified.

misty1212
 one year ago
Best ResponseYou've already chosen the best response.2lol there is no such thing as "simplify"

misty1212
 one year ago
Best ResponseYou've already chosen the best response.2add, subtract, multiply, divide, combine like terms, reduce to lowest terms, write in simplest radical form etc. but not "simplify"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Great so I just have to solve for F(X)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0My original question was just what was on my paper.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So another example. If ƒ(x ) = x 2 + 1 and g(x ) = 3x + 1, find [ƒ(4)] 2. Would just be 257?

beginnersmind
 one year ago
Best ResponseYou've already chosen the best response.0well f(4) is 17. So [f(4)]^2 is 17^2.

beginnersmind
 one year ago
Best ResponseYou've already chosen the best response.0Or did you change the definition of f(x) to f(x) = x^2? Then [f(4)]^2 = (4^2)^2 = 16^2 = 256
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