Discussion

Explanation:

f(x) = 3[x] - 1

As x is an integer,
[x] = x

∴ f(x) = 3[x] - 1 = 3x - 1
 
Also, g(x) = {3x – 2} + 4
 
Since x is an integer, (3x – 2) is also an integer.
∴ Fractional part of (3x – 2) = 0
 
∴ f(x) + g(x) = 3x - 1 + 4 = 3x + 3
 
Hence, option (b).

» Your doubt will be displayed only after approval.


Doubts


Feedback

Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.


© 2024 | All Rights Reserved | Apti4All