Answer:
If you actually meant f(x)=2x+3x−1 ,
then note it can be rewritten as:
f(x)=2x−2+5x−1=2+5x−1=y
At this point you can find x in terms of y (“make x the subject”):
y−2=5x−1⟹1y−2=x−15
⟹x=5y−2+1=y+3y−2
Switch variables back to x, and you have the inverse function of f:
g(x)=x+3x−2
How do you know you’ve calculated correctly? The composition of f with g should result in x — that is, evaluate f(g) and you should get the result x:
Answer:
Open the image. (Hope you don't mind about bad writing)
I'm not sure about 1 and 2 but 6 is wrong it is a = sign and 7 is wrong.
X = -1 :)
First simplify. Then do
7x + 7 =
7x = -7
x = -1