SOLUTION: perform the request operation or operations. find the domain of each. f(x)= square root of 2x+4 , g(x)= square root of 9x-16

Algebra ->  Functions -> SOLUTION: perform the request operation or operations. find the domain of each. f(x)= square root of 2x+4 , g(x)= square root of 9x-16      Log On


   

Question 211414: perform the request operation or operations. find the domain of each.
f(x)= square root of 2x+4 , g(x)= square root of 9x-16
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Radicands must be greater than or equal to zero.

In f(x), the domain requires that
2x+%2B4+%3E=0
2x%3E=-4
x%3E=-2

In g(x), the domain is
9x-16%3E=0
9x%3E=16
x%3E=16%2F9

Please see my "non-traditional" explanation of "Functions, Domain, and Range"!! Go to my website by clicking on my tutor name "Rapaljer" anywhere in algebra.com. Then look for my "MATH IN LIVING COLOR" page near the top of my Homepage. Select "College Algebra", and look in Chapter 2 for this topic. My students used to tell me they understood my explanations a LOT better than the explanations in the traditional textbooks.

R^2

Dr. Robert J. Rapalje, Retired
Seminole Community College
Altamonte Springs Campus
Florida