Question
Download Solution PDFThe longest period of 4cos3 x - 3cos x is ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Period of a function:- If a function repeats over at a constant period we say that is a periodic function.
- It is represented like f(x) = f(x + T), T is the real number and this is the period of the function.
- The period of sin x and cos x is 2π
Calculation:
To Find: Period of 4cos3 x - 3cos x
As we know 4cos3 x - 3cos x = cos 3x
Period of cos x is 2π
Therefore, the Period of cos 3x is \(\rm \frac {2\pi}{3}\)
Last updated on Jun 30, 2025
->Indian Airforce Agniveer (02/2026) Notification has been released. Interested candidates can apply between 11th July to 31st July 2025.
->The Examination will be held 25th September 2025 onwards.
-> Earlier, Indian Airforce Agniveer Group X 2025 Last date had been extended.
-> Candidates applied online from 7th to 2nd February 2025.
-> The online examination was conducted from 22nd March 2025 onwards.
-> The selection of the candidates will depend on three stages which are Phase 1 (Online Written Test), Phase 2 ( DV, Physical Fitness Test, Adaptability Test), and Phase 3 (Medical Examination).
-> The candidates who will qualify all the stages of selection process will be selected for the Air Force Group X posts & will receive a salary ranging of Rs. 30,000.
-> This is one of the most sought jobs. Candidates can also check the Airforce Group X Eligibility here.