Test Index

NCERT Class XI Mathematics - Limits and Derivatives - Solutions

© examsnet.com
Question : 50
Total: 72
1
ax2+bx+c
Solution:  
Let f (x) =
1
ax2+bx+c
 ... (i)
Differentiating (i) with respect to x, we get
d
dx
 (f (x)) =
(ax2+bx+c).(1)′−1.(ax2+bx+c)′
(ax2+bx+c)2

=
(ax2+bx+c)(0)−(2ax+b)
(ax2+bx+c)2
=
−2ax−b
(ax2+bx+c)2
© examsnet.com
Go to Question:
Prev Question
Next Question