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The radius of a circular juice blot on a piece of paper towel t seconds after it was first seen is 1+2t modelled by r(t) where r is measured in cm. Determine the rate of increase of the 1+t blot's radius after 3 seconds.

The radius of a circular juice blot on a piece of paper towel t seconds after it was first seen is 1+2t modelled by r(t) where r is measured in cm. Determine the rate of increase of the 1+t blot's radius after 3 seconds.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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The answer is supposed to be 0.0625cm/s but I don't know how to get it.

 

The radius of a circular juice blot on a piece of paper towel t seconds after it was first seen is 1+2t modelled by r(t) = where r is measured in cm. Determine the rate of increase of the 1+t' blot's radius after 3 seconds.
Transcribed Image Text:The radius of a circular juice blot on a piece of paper towel t seconds after it was first seen is 1+2t modelled by r(t) = where r is measured in cm. Determine the rate of increase of the 1+t' blot's radius after 3 seconds.
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