My Math Forum find the largest possible domain for the function f

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 June 3rd, 2011, 03:37 AM #1 Newbie   Joined: Apr 2011 Posts: 15 Thanks: 0 find the largest possible domain for the function f f:x square root of pi/4-arcos x sorry if i could not write hope you understand the function
 June 3rd, 2011, 04:23 AM #2 Math Team   Joined: Sep 2007 Posts: 2,409 Thanks: 6 Re: find the largest possible domain for the function f Use parentheses! is the problem (sqrt(pi))/(4- arccos(x)) or is it sqrt( pi/(4- arccos(x))? Those are very different functions with different domains.
 June 3rd, 2011, 04:39 AM #3 Newbie   Joined: Apr 2011 Posts: 15 Thanks: 0 Re: find the largest possible domain for the function f sqrt root of this ((pi/4)-arctang X)
 June 3rd, 2011, 04:40 AM #4 Newbie   Joined: Apr 2011 Posts: 15 Thanks: 0 Re: find the largest possible domain for the function f sorry...arccos of x
 June 3rd, 2011, 09:55 AM #5 Newbie   Joined: Jun 2011 Posts: 3 Thanks: 0 Re: find the largest possible domain for the function f Hi, For plain vanilla arcos() the domain runs from -1 to 1, while the range goes from 0 to pi. When you draw of graph of arcos, you will find the the maximal domain for the composite function runs from x = 1 / sqrt(2) to x = 1. The reason that the rest is not available is that what goes under the root must be non-negative. Bye now, Jan

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# Find the largest possible domain of each of the following functions. (a) -JX

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