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nexus9112 [7]
3 years ago
12

A square with side x, is changing with time where x(t)=3t+1. What is the formula for the rate of change of the area of the squar

e
Mathematics
1 answer:
lawyer [7]3 years ago
5 0

Answer:

  A' = 6(3t +1)

Step-by-step explanation:

The area is the square of the side length, so ...

  A = (3t +1)²

The derivative with respect to t is then

  A' = 2(3t +1)·(3) = 6(3t +1)

If you like, you can multiply out the area expression first, then differentiate.

  A = 9t² +6t +1

  A' = 18t +6

This can be factored, if you like, to ...

  A' = 6(3t +1)

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