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

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#1 2013-01-03 20:22:20

freddogtgj
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Help please

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



Your help is much appreciated.

#3 2013-01-04 00:22:25

freddogtgj
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Re: Help please

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

#4 2013-01-04 00:58:28

scientia
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Re: Help please

Substitute



into



then rearrange to the form I gave in my hint.

Not that difficult, I hope? roll

#5 2013-01-04 01:02:48

gAr
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Re: Help please

Hi,

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


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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