Multiple Choice Questions on If f x 2sin x g x cos2 x then find the value of fg pi 4 ........ for NDA Exam Preparation

Back to Main Page

Multiple Choice Questions

If f x 2sin x g x cos2 x then find the value of fg pi 4 ........

Mathematics (NDA) Set theory
    Download Solution PDF

    If f(x) = 2sin x , g(x) = cos2(x) , then find the value of (fg)( π/4)?

    1/2

    Incorrect Answer

    -1/2

    Incorrect Answer

    1/√2 

    Correct Answer

    2

    Incorrect Answer
    छोटे Courses बड़े Results
    Master Set theory
    Prepare through Micro-courses
    Try Now
    Explanation:

     (f g) (π/4) = f(π /4)g(π /4) 

    = 2sinπ /4 cos2( π/4) 

    = 2× 1/√2 ×(1/√2)2 

    = 2×1/√2 × ½ = 1/√2 

    By: bhavesh kumar singh
    ProfileResources

    Let's Discuss

    Master
    Set theory
    With abhipedia
    Micro Courses
    Try Now
    What our students have to say
    Review on us
    Download Abhipedia Android App

    Access to prime resources

    Downlod from playstore
    download android app download android app for free