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Grade:
        
What is the domain of the function f(x) =
sqrt [{cos ^-1( 1 – |x|) /2 }}??
 
 While solving this question the steps were-
-1 less than or equal to 1 – |x|/2 less than or equal to 1
= – 2 less tha or equal to 1  – |x| less than or equal to 2 . ….so on . Then we get
 – 1 less than or equal to |x| less than or equal to 3
Then we get 2 intervals [-3,3] and [-1,1].
So final interval should be intesection of both or union of both.Please explain.
one year ago

Answers : (1)

Deepak Kumar Shringi
askIITians Faculty
4398 Points
							IT WILL BE INTERSECTION OF BOTH AS ALL CONDITIONS ARE NECESSARY
						
one year ago
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