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DeadShot
 2 years ago
If f(x) = x plus 2, all over 2, then what is f^1(x) ?
DeadShot
 2 years ago
If f(x) = x plus 2, all over 2, then what is f^1(x) ?

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kropot72
 2 years ago
Best ResponseYou've already chosen the best response.1\[y=\frac{x+2}{2}\] The next step is to interchange x and y. Do you want me to take you thru it?

DeadShot
 2 years ago
Best ResponseYou've already chosen the best response.0yes, i don't understand this kind of problem

agradecompetent
 2 years ago
Best ResponseYou've already chosen the best response.0okay let's do it step by step

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.1When we interchange x and y we get \[x=\frac{y+2}{2}\] Now we need to solve for y by multiplying both sides by 2 giving\[2x=y+2\] Now you can subtract 2 from both sides to find y which is \[f ^{1}(x)\]

DeadShot
 2 years ago
Best ResponseYou've already chosen the best response.0so then, it would be 2x  2 = y, right?

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.1@DeadShot Good work. Youare correct. You can factorise 2x  2 = 2(x  1)

agradecompetent
 2 years ago
Best ResponseYou've already chosen the best response.0f(x) = (x+2)/2 =>y=(x+2)/2 2y= x+2 x=2y2 x=2(y1) find f^1(x) f^1(x) = 2(x1)

agradecompetent
 2 years ago
Best ResponseYou've already chosen the best response.0you are welcome Deadshot
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