Advertisement
Advertisement
Example 21 - Chapter 2 Class 11 Relations and Functions (Term 1)
Last updated at Jan. 28, 2020 by Teachoo
Transcript
Example 21 Find the domain of the function "f" (x) = (" " 2 + 3 + 5)/( 2 5 + 4) "f" (x) = (" " x2 + 3x + 5)/(x2 5x + 4) = (x2 + 3x + 5)/(x2 4x + 4) = (x2 + 3x +5)/( (x 4) 1( 4)) = (x2 + 3x + 5)/(( 4)(x 1) ) In real numbers , the denominator cannot be zero Hence (x 4) (x 1) 0 x 4 and x 1 Hence the domain of the function will be all real numbers except 1 and 4 Hence, the domain = R {1, 4}.
Advertisement
Examples
Example 1
Example 2
Example 3 Important
Example 4 Important Deleted for CBSE Board 2022 Exams
Example 5 Deleted for CBSE Board 2022 Exams
Example 6 Important
Example 7
Example 8 Important
Example 9 Important
Example 10
Example 11 (i)
Example 11 (ii) Important
Example 11 (iii) Important
Example 12
Example 13
Example 14 Important
Example 15 Important
Example 16 Deleted for CBSE Board 2022 Exams
Example 17 Important Deleted for CBSE Board 2022 Exams
Example 18
Example 19
Example 20 Important
Example 21 Important You are here
Example 22 Important
Chapter 2 Class 11 Relations and Functions (Term 1)
Serial order wise
- Ex 2.1
- Ex 2.2
- Ex 2.3
-
Examples
- Miscellaneous
About the Author
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.