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Find a formula for the inverse of the following function, if possible.
G(x)=root(5)(4x+2)

Find a formula for the inverse of the following function, if possible.\newlineG(x)=4x+25 G(x)=\sqrt[5]{4 x+2}

Full solution

Q. Find a formula for the inverse of the following function, if possible.\newlineG(x)=4x+25 G(x)=\sqrt[5]{4 x+2}
  1. Understand Goal: Understand the function and the goal.\newlineWe are given the function G(x)=4x+25G(x) = \sqrt[5]{4x+2}, and we need to find its inverse. The inverse function will take the output of GG and return the input xx.
  2. Set Equation Equal: Set G(x)G(x) equal to yy for convenience.\newlineLet y=G(x)y = G(x), so we have y=4x+25y = \sqrt[5]{4x+2}.
  3. Swap xx and yy: Swap xx and yy to begin finding the inverse.\newlineTo find the inverse, we switch the roles of xx and yy. This gives us x=4y+25x = \sqrt[5]{4y+2}.
  4. Isolate y Term: Isolate the term containing yy. To solve for yy, we need to get rid of the fifth root. We do this by raising both sides of the equation to the power of 55. This gives us x5=(4y+25)5x^5 = (\sqrt[5]{4y+2})^5.
  5. Simplify Equation: Simplify the equation.\newlineWhen we raise the fifth root to the power of 55, they cancel each other out, leaving us with x5=4y+2x^5 = 4y+2.
  6. Solve for y: Solve for y.\newlineNow we need to isolate yy. We do this by subtracting 22 from both sides and then dividing by 44. This gives us (x52)/4=y(x^5 - 2)/4 = y.
  7. Write Inverse Function: Write the inverse function.\newlineThe inverse function, which we can denote as G1(x)G^{-1}(x), is then G1(x)=x524G^{-1}(x) = \frac{x^5 - 2}{4}.

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