- #1
steejk
- 15
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Homework Statement
F = 1/2.a(T-Tc)M^2 + 1/4.bM^4
I need to find dF/dM
a,Tc,b are positive constants
2. The attempt at a solution
I assume this is to do with partial derivatives etc.
So I found:
∂F/∂T = 1/2.aM^2
∂F/∂M = TaM - TcaM + bM^3
And using a chain rule:
dF/dM = ∂F/∂T.dT/dM + ∂F/∂M.dM/dM
But not sure how to find dT/dM
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