यदि f(x) + 2f() =  है, तो f(x) का मान क्या है?

Answer (Detailed Solution Below)

Option 4 :
Free
NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

Detailed Solution

Download Solution PDF

गणना:

यहाँ, f(x) + 2f() =                 ....(1)

x को  से प्रतिस्थापित करने पर, हमें निम्न प्राप्त होता है

f() + 2f(x) = x                          ....(2)

(1) और (2) को जोड़ने पर, हमें निम्न प्राप्त होता है

 3f(x) + 3f()) = x +                ....(3)

अब, (1) को (2) में से घटाने पर, हमें निम्न प्राप्त होता है

f(x) - f() = x - 

3 से गुणा करने पर,

3f(x) - 3f() = 3x -                   ....(4)

अब, (3) और (4) को जोड़ने पर, हमें निम्न प्राप्त होता है

6f(x) = 4x - 

f(x) = 

अतः, विकल्प (4) सही है।     

Latest NDA Updates

Last updated on Jun 18, 2025

->UPSC has extended the UPSC NDA 2 Registration Date till 20th June 2025.

-> A total of 406 vacancies have been announced for NDA 2 Exam 2025.

->The NDA exam date 2025 has been announced. The written examination will be held on 14th September 2025.

-> The selection process for the NDA exam includes a Written Exam and SSB Interview.

-> Candidates who get successful selection under UPSC NDA will get a salary range between Rs. 15,600 to Rs. 39,100. 

-> Candidates must go through the NDA previous year question paper. Attempting the NDA mock test is also essential. 

More Composition of Functions Questions

More Relations and Functions Questions

Hot Links: teen patti fun teen patti royal teen patti live teen patti - 3patti cards game downloadable content teen patti 50 bonus