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For the function 
f(x)=(2x-9)/(x+10), find 
f^(-1)(x).
Answer: 
f^(-1)(x)=

For the function f(x)=2x9x+10 f(x)=\frac{2 x-9}{x+10} , find f1(x) f^{-1}(x) .\newlineAnswer: f1(x)= f^{-1}(x)=

Full solution

Q. For the function f(x)=2x9x+10 f(x)=\frac{2 x-9}{x+10} , find f1(x) f^{-1}(x) .\newlineAnswer: f1(x)= f^{-1}(x)=
  1. Replace with yy: 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 to make it easier to work with.\newliney=2x9x+10y = \frac{2x - 9}{x + 10}
  2. Switch x and y: Now, switch x and y to find the inverse function.\newlinex=2y9y+10x = \frac{2y - 9}{y + 10}
  3. Multiply by (y+10)(y + 10): Next, we need to solve for yy. To do this, we'll multiply both sides of the equation by (y+10)(y + 10) to get rid of the fraction.\newlinex(y+10)=2y9x(y + 10) = 2y - 9
  4. Distribute xx: Distribute xx on the left side of the equation.xy+10x=2y9xy + 10x = 2y - 9
  5. Move terms: To solve for yy, we need to get all the yy terms on one side and the constant terms on the other. Let's move the terms involving yy to the left side and the constant terms to the right side.xy2y=10x9xy - 2y = -10x - 9
  6. Factor out yy: Factor out yy from the left side of the equation.y(x2)=10x9y(x - 2) = -10x - 9
  7. Divide by (x2)(x - 2): Now, divide both sides by (x2)(x - 2) to solve for yy.y=10x9x2y = \frac{-10x - 9}{x - 2}
  8. Final Inverse Function: We have found the inverse function. Therefore, f1(x)f^{-1}(x) is:\newlinef1(x)=10x9x2f^{-1}(x) = \frac{-10x - 9}{x - 2}

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