Let a metallic rod 20 cm long be heated to a uniform temperature of 100° C. Suppose that at t = 0, the ends of the bar are plunged into an ice bath at 0° C and thereafter maintained at this temperature, but that no heat is allowed to escape through the lateral surface. Find an expression for the temperature at any point in the bar at any later time.

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A:

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A:

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A:

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A:

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.