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Question: plotting rational powers of x

Question:plotting rational powers of x

Gregor Olsavsky 5 Maple
plot
September 29 2011
1

I am trying to get students to study inc/dec etc. with a function like y = 3/5* x^(5/3) - 1/2*x^(2/3)

the problem is that Maple will NOT plot either the original function or its derivative, except where x > 0

this does not make sense to me, since of course a cube root exists for x < 0.

Please HELP !!!

thanks

Gregor Olsavsky

penn state univ.

PS I use Maple V at home, at school Maple 11, classic work sheet
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