CBSE Class 12 Sample Paper for 2024 Boards

CBSE Class 12 Sample Paper for 2023 Boards →
Class 12
Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Question 38 (ii) - CBSE Class 12 Sample Paper for 2024 Boards - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at April 16, 2024 by

Does the rate of growth of the plant increase or decrease in the first three days? What will be the height of the plant after 2 days?

The rest of the post is locked. Join Teachoo Black to see the full post.

Join Now
Go Ad-free

Transcript

Given y = 4š‘„āˆ’1/2 š‘„^2 Let Rate of growth be represented by g(x) = š‘‘š‘¦/š‘‘š‘„ To find increase or decrease , we will calculate gā€™(x) g(x) = š‘‘š‘¦/š‘‘š‘„ = 4 āˆ’ x gā€™(x) = š‘‘/š‘‘š‘„ (š‘‘š‘¦/š‘‘š‘„) = (š‘‘(4 āˆ’ š‘„))/š‘‘š‘„ = āˆ’1 < 0 Since gā€™(x) < 0 Thus, g(x) is decreasing So, the growth of the plant decreases for the first three days. Finding Height of plant after 2 days Putting x = 2 in value of y y = 4š‘„āˆ’1/2 š‘„^2 y = 4(2)āˆ’1/2 Ɨ 2^2 y = 8 āˆ’ 2 y = 6 cm

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo