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How many roots? (Posted on 2011-07-31) Difficulty: 3 of 5
Prove that the equation
x^4-4*x-1=0
has at most 2 real number solutions.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
re: answerJoan Smith2012-02-19 12:02:16
answerBEASLEYPeggy182011-11-16 04:04:45
reply this postDeidre25Mayo2011-10-13 18:32:22
replyLeonEdwina322011-10-13 08:44:49
re: Solution (spoiler) - I thinkJayDeeKay2011-08-04 20:04:19
SolutionSolution (spoiler) - I thinkKenny M2011-08-02 17:48:55
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