Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

gAr
2013-01-04 01:02:48

Hi,

Or perhaps we can use the discriminant >= 0, by solving the quadratic in x?

scientia
2013-01-04 00:58:28

Substitute



into



then rearrange to the form I gave in my hint.

Not that difficult, I hope? roll

freddogtgj
2013-01-04 00:22:25

Sorry it has been a while since I have done any proper maths.  Could you provide the solution please?

scientia
2013-01-03 23:07:10

freddogtgj
2013-01-03 20:22:20

Hi, I would like your help in proving the following:



Your help is much appreciated.

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