Posted by Sam on Saturday, January 26, 2013 at 3:40pm.
Give the domain of the following functions. Give your answer in interval notation. a) f(x)= 5x2/x^25x+6 and b) square root of 52x

Math  Reiny, Saturday, January 26, 2013 at 5:07pm
a) f(x) = (5x2)/((x2)(x3)) , the brackets are essential.
domain: any real number , except x=2, x=3
b) f(x) = √(52x)
we can't take the square root of a negative, so
52x ≥ 0
2x ≥ 5
x ≤ 5/2