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svetlana [45]
3 years ago
6

Algebra 2! Help! I WILL GIVE BRAINLIEST!!!!

Mathematics
1 answer:
Papessa [141]3 years ago
7 0

Answer:

f^{-1}(x)=\dfrac{2}{x+1}-2;

the domain of the function f^{-1}(x) is   (-\infty,-1)\cup(-1,\infty);

the range of the function f^{-1}(x) is   (-\infty,-2)\cup(-2,\infty).

Step-by-step explanation:

To write the rule of inverse function you need to express x in terms of y and then change x into y and y into x.

1.

y=\dfrac{2}{x+2}-1,\\ \\\dfrac{2}{x+2}=y+1,\\ \\x+2=\dfrac{2}{y+1},\\ \\x=\dfrac{2}{y+1}-2.

2. Change x into y and y into x:

y=\dfrac{2}{x+1}-2,\\ \\f^{-1}(x)=\dfrac{2}{x+1}-2.

3. The domain of the function f(x)=\dfrac{2}{x+2}-1 is (-\infty,-2)\cup(-2,\infty) and the range is   (-\infty,-1)\cup(-1,\infty). Thus, the domain of the function f^{-1}(x) is   (-\infty,-1)\cup(-1,\infty) and the range is  (-\infty,-2)\cup(-2,\infty)

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