anonymous
  • anonymous
Can someone please explain this inverse, 1) f(x) = x^4 - 3x^2 + 18 -I know there's no inverse but why and how do i prove this?-
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
I think there is an inverse, mainly because quartics are solvable.
anonymous
  • anonymous
There is? how would i even start...im at a lose with this problem.
anonymous
  • anonymous
Ok, we have y = x^4 + 3x^2+18 inverting, we have x = y^4+3y^2+18 solve for y for the inverse

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anonymous
  • anonymous
ah...idk why i kept tying factor it... but thank you =)
anonymous
  • anonymous
it doesnt factor, it doesnt solve, its discriminate is negative

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