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Home > CALC > Chapter 7 > Lesson 7.1.5 > Problem 7-51
7-51.
An alien uses mysterious powers to make crop circles in a Nebraska wheat field. If the radius of a crop circle increases at the rate of
Start with the geometric equation of the area within a circle. There is no Calculus involved in this step.
Do NOT substitute a value for
Implicitly differentiate with respect to time,