Question

The length l metres of a certain metal rod at temperature θ◦C is given by l...

The length l metres of a certain metal rod at temperature θ◦C is given by l = 1 + 0.00004θ + 0.0000005θ2.
Determine the rate of change of length, in mm/◦C, when the temperature is:
a)   100◦C
b)   300◦C.

Math   Calculus   
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Answer #1

Answer (a) = 0.14 mm/℃

(b) = 0.34mm/℃

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