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Grade 11Algebra

to find the range of 1/x-5 root over if we express 1/x-5 root over in terms of y then it comes out to be x=1+5y^2/y^2,then we get,y^2 does not equal to 0,hence y is not equal to 0.So shouldn’t the range be R-{0}??if no then why no?

Profile image of Bidisha Baruah
11 Years agoGrade 11
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2 Answers

Profile image of Nicho priyatham
11 Years ago
NO the range is not R-{0}
it is (0,infinit)
observe the function clearly it is under root of 1/x-5 so u need to know that under root of any number is always POSITIVE  
so u  also need to remove  all negtive integers from R
 saying frankly wt method u have done is correct but u have done a gr8  mistake in the  process
my question nw here for u is whats that mistake u have done (hint :please think abt domain of x)
PLS APPROVE IF USEFULL and in case of any doubts ask in ans box
Profile image of Bidisha Baruah
11 Years ago
so it is important to know the domain right??