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NCERT Class XI Mathematics - Relations and Functions - Solutions

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Question : 26
Total: 36
If f (x) = x2, find
f(1.1)−f(1)
(1.1−1)
Solution:  
We have f (x) = x2
∴
f(1.1)−f(1)
(1.1−1)
 =
(1.1)2−(1)2
0.1
 =
1.21−1
0.1
 =
0.21
0.1
 = 2.1
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