Author Question: Solve the problem. Round your answer, if appropriate.As the zoom lens in a camera moves in and out, ... (Read 39 times)

Mollykgkg · **on:** Dec 18, 2021

Solve the problem. Round your answer, if appropriate.

As the zoom lens in a camera moves in and out, the size of the rectangular image changes. Assume that the current image is 4 cm × 3 cm. Find the rate at which the area of the image is changing (dA/df) if the length of the image is changing at 0.6 cm/s and the width of the image is changing at 0.2 cm/s.
◦ 5.2 cm²/sec
◦ 6.0 cm²/sec
◦ 3.0 cm²/sec
◦ 2.6 cm²/sec

meganlapinski · **Reply #1 on:** Dec 18, 2021

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