Welcome :: Homework Help and Answers :: Mathskey.com

Recent Visits

  
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,435 questions

17,804 answers

1,438 comments

774,958 users

Calculus

0 votes
If A = r^2 and dA/dt = 2

What is dr/dt  when r=3 ?
asked Sep 9, 2014 in CALCULUS by zoe Apprentice

1 Answer

0 votes
 
Best answer

image

Apply derivative on each side with respect of r .

image

image

image

Substitute the values of image.

image

image

when r  = 3

image

image.

answered Sep 9, 2014 by david Expert
selected Sep 9, 2014 by zoe

Related questions

asked Nov 14, 2014 in CALCULUS by anonymous
asked Nov 13, 2014 in CALCULUS by anonymous
asked Nov 12, 2014 in CALCULUS by anonymous
asked Nov 10, 2014 in CALCULUS by anonymous
asked Nov 3, 2014 in CALCULUS by anonymous
asked Oct 30, 2014 in CALCULUS by anonymous
asked Oct 21, 2014 in CALCULUS by anonymous
asked Oct 11, 2014 in CALCULUS by anonymous
asked Oct 11, 2014 in CALCULUS by anonymous
asked Oct 11, 2014 in CALCULUS by anonymous
asked Oct 10, 2014 in CALCULUS by anonymous
...