f(x)=?( x^2-16)
let's first look at it
http://www.wolframalpha.com/input/?i=f(x)%3D%E2%88%9A(+x%5E2-16)
consider only the "blue" graph, which is the reals
clearly the domain is y ? 0
for the domain, x^2 - 16 ? 0
x^2 ? 16
x ? 4 OR x ? -4
If x ? -4 is part of the question, the use only the left part of the graph
if a problem says f(x)=square root x^2-16; x less than or equal to -4.
Find domain and range.
to do this i set up the equation like x^2-16 less than or equal to -4. However by doing this I am runnning into complications findng domain and range. Am i doing it wrong can someone help me
1 answer
1 answer