Vector Calculus

[Tulip007]

A bead moves along a circular wire of radius a in a region where the temperature T (x,y) is given by the formula
T (x,y) = x^2 - 3y^2
Find the rate of change of temperature dT/ds where s is distance travelled along the wire, at any point (x,y).

There is no diagram to go by, that is the whole question. I just need help on how to start to work out this problem please.

 

[Deleted member 4993]

A bead moves along a circular wire of radius a in a region where the temperature T (x,y) is given by the formula
T (x,y) = x^2 - 3y^2
Find the rate of change of temperature dT/ds where s is distance travelled along the wire, at any point (x,y).

There is no diagram to go by, that is the whole question. I just need help on how to start to work out this problem please.

Hint:

dT/ds = dT/dx * dx/ds + dT/dy * dy/ds

and

ds^2 = dx^2 + dy^2