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For the function 
f(x)=(9-5x)/(3+x), find 
f^(-1)(x).
Answer: 
f^(-1)(x)=

For the function f(x)=95x3+x f(x)=\frac{9-5 x}{3+x} , find f1(x) f^{-1}(x) .\newlineAnswer: f1(x)= f^{-1}(x)=

Full solution

Q. For the function f(x)=95x3+x f(x)=\frac{9-5 x}{3+x} , 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=95x3+xy = \frac{9 - 5x}{3 + x}
  2. Interchange xx and yy: Now, interchange xx and yy to find the inverse function.x=95y3+yx = \frac{9 - 5y}{3 + y}
  3. Multiply both sides: Next, we need to solve for yy. To do this, we'll multiply both sides of the equation by (3+y)(3 + y) to eliminate the fraction.\newlinex(3+y)=95yx(3 + y) = 9 - 5y
  4. Distribute xx: Distribute xx on the left side of the equation.3x+xy=95y3x + xy = 9 - 5y
  5. Move terms with yy: Now, we want to get all the terms with yy on one side and the constant terms on the other side. Let's move the term with yy on the left side to the right side by adding 5y5y to both sides.\newline3x+xy+5y=93x + xy + 5y = 9
  6. Combine like terms: Combine like terms on the left side.\newline3x+y(x+5)=93x + y(x + 5) = 9
  7. Factor out yy: To isolate yy, we need to factor it out from the terms on the left side.y(x+5)=93xy(x + 5) = 9 - 3x
  8. Divide both sides: Now, divide both sides by (x+5)(x + 5) to solve for yy.y=93xx+5y = \frac{9 - 3x}{x + 5}
  9. Replace yy with f1(x)f^{-1}(x): We have found the inverse function. So, we can replace yy with f1(x)f^{-1}(x) to express our answer.\newlinef1(x)=93xx+5f^{-1}(x) = \frac{9 - 3x}{x + 5}

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