if f(x)=sin4x + cos4x, then what is the range of f(x)
Chirag Jain , 9 Years ago
Grade 12
4 Answers
Vijay Mukati
Last Activity: 9 Years ago
Dear Student,
Differnetiate the functions and equate the result with zero to get the point of minima and maximua. You will get x = 0, 45 and 90 degree.
From here we can easily find the range and it will come out to be [1/2, 1]
Thanks.
Chirag Jain
Last Activity: 9 Years ago
Sir, the answer is [3/4,1] as stated in the book and the book is Objective Maths by Purshottam Kumar Sharma
Chirag Jain
Last Activity: 9 Years ago
The service of askiitians is very slow, posted a question 3 days ago, but till now haven’t got any satisfactory rreply. How can someone invest in such a slow service? I am sorry if you think I have been rude in my comment.
arun
Last Activity: 9 Years ago
in this question we have to find the range for
now,
as have a maximum value of 1 and a minimum value of 0
so, minimum value of
and maximum value of
so, range of f(x)=[1/2,1]
I think there is any mistake in the book. As you can see the detailed solution of the question and if there is any other doubt related to this question you can ask