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Question: Two solutions required

Question:Two solutions required

alfarunner 85
solve rootfinding fsolve
February 27 2018
1

Why can't MAple give me two solutions of

-2*sqrt(-K[1]^2+1)*K[1]+4*K[1]^2-Pi-2*arctan(sqrt(-K[1]^2+1)/K[1])=0

I only get -2*10^-13. There should be one K[1]=0.983 about

 
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