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For the function 
f(x)=(3)/(9-2x), find 
f^(-1)(x).
Answer: 
f^(-1)(x)=

For the function f(x)=392x f(x)=\frac{3}{9-2 x} , find f1(x) f^{-1}(x) .\newlineAnswer: f1(x)= f^{-1}(x)=

Full solution

Q. For the function f(x)=392x f(x)=\frac{3}{9-2 x} , find f1(x) f^{-1}(x) .\newlineAnswer: f1(x)= f^{-1}(x)=
  1. Replace with y: To find the inverse function, f1(x)f^{-1}(x), we need to switch the roles of xx and yy in the original function and then solve for yy. Let's start by replacing f(x)f(x) with yy for clarity.\newliney=392xy = \frac{3}{9 - 2x}
  2. Switch x and y: Now, switch x and y to find the inverse function.\newlinex=392yx = \frac{3}{9 - 2y}
  3. Cross-multiply to eliminate fraction: Next, we solve for yy. To do this, we'll first cross-multiply to get rid of the fraction.x×(92y)=3x \times (9 - 2y) = 3
  4. Distribute xx: Distribute xx into the parentheses.9x2xy=39x - 2xy = 3
  5. Isolate term with y: We want to isolate the term with yy, so let's move the term without yy to the other side by subtracting 9x9x from both sides.\newline2xy=39x-2xy = 3 - 9x
  6. Divide by 2x-2x: Now, divide both sides by 2x-2x to solve for yy.y=39x2xy = \frac{3 - 9x}{-2x}
  7. Factor out 3-3: We can simplify the expression by factoring out a 3-3 from the numerator.\newliney=3(1+3x)2xy = \frac{-3(1 + 3x)}{-2x}
  8. Cancel negative signs: The negative signs in the numerator and denominator cancel each other out.\newliney=3(1+3x)2xy = \frac{3(1 + 3x)}{2x}
  9. Write inverse function: Finally, we can write the inverse function by replacing yy with f1(x)f^{-1}(x).f1(x)=3(1+3x)2xf^{-1}(x) = \frac{3(1 + 3x)}{2x}

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