Find the largest possible domain for the following funtions: a) sqrt x(x-4) b) sqrt 2x(x-4) Thank you in advance for your help
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Originally Posted by Oasis1993 Find the largest possible domain for the following funtions: a) sqrt x(x-4) b) sqrt 2x(x-4) Thank you in advance for your help Obviously, you can't have a negative sign under the square root. So only values of such that is positive will be in the domain of . Spoiler: has two zeroes at and , so any value of will yield a negative value. Thus your domain is . Part (b) is identical.
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