Find Inverse Function of y=xSqrt(-2x): Solution Here

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SUMMARY

The inverse function of y = x√(-2x) for x < 0 can be determined by solving the equation y = f(x) = x√(-2x). To find the inverse, rearrange the equation to x = y√(-2y) and solve for y. This process involves squaring both sides and ultimately leads to solving a cubic equation. The discussion confirms that finding the inverse function requires careful manipulation and algebraic skills.

PREREQUISITES
  • Understanding of inverse functions
  • Proficiency in algebraic manipulation
  • Familiarity with cubic equations
  • Knowledge of square roots and their properties
NEXT STEPS
  • Study methods for solving cubic equations
  • Learn about the properties of inverse functions
  • Practice algebraic manipulation techniques
  • Explore the implications of function domains and ranges
USEFUL FOR

Mathematics students, educators, and anyone interested in advanced algebraic concepts, particularly those focusing on inverse functions and cubic equations.

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how do I find the inverse function of y=xSqrt -2X

I have tried transposing it 6 times now but my results don't give the right answer for a 1:1 function for x<0
 
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I assume you mean to find the inverse function for [itex]f(x)= x\sqrt{-2x}[/tex] for x< 0. Finding an inverse function is exactly the same a solving an equation. The point of "inverse" is that if [itex]y= f(x)= x\sqrt{-2x}[/itex], then [itex]x= y\sqrt{-2y}[/itex]. Solve that equation for y. (You will need to square both sides and eventually solve a cubic equation.)[/itex]
 
No that's not what I meant but not to worry i found the solution with touch more effort.
 

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