Question: How to solve this Eq. by Maple?

I have a problem and I haven't been able to solve it yet. I want to solve an ordinary diffrential equation similar to
and plot phi versus xi for a the following conditions:
1) V(phi)=dphi/dxi=0 at (phi=0,phi_m) and
2) dV(phi)/dphi=0 at phi=phi_m and 
3) d^2V(phi)/dphi^2=0 at both phi=0 and phi=phi_m.
How can I do this by Maple?(see the attached file)

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