Math problem where graphing calculator may slow you down...

08172014, 10:25 PM
Post: #5




RE: Math problem where graphing calculator may slow you down...
Well, it seems that a fully analytical solution is rather trivial:
Using the variable transform u=ln(x) the problem reduces to tg(u)=1 whom solutions are: u=pi/4+k.pi, k in Z. Then searching u=ln(50) gives the upper bound which is for k=0. The following values are then for k=1 and 2. Same solution for degrees but then u=ln(1e20). Nothing more than a pen, a 'small' paper and the first scientific calculator you can grasp around you (in that case a TI36X pro, shame on me ;) 

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