difference between plots

Question:difference between plots

Posted: maple2015 140

July 26 2015

I can't understand difference between plots!

Please expailn it.

Thanks.

plot({sqrt(x+2*sqrt(x-1))+sqrt(x-2*sqrt(x-1)), sqrt(x-2*sqrt(x-1)), sqrt(x+2*sqrt(x-1))}, x = -3 .. 3)

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