SOLUTION: Domain and graph of f(x) = squarer root 9-4xsquare

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Question 962475: Domain and graph of f(x) = squarer root 9-4xsquare
Answer by hkwu(60) About Me  (Show Source):
You can put this solution on YOUR website!
If you mean
f%28x%29=sqrt%289-4x%5E2%29
then the domain is wherever the function is defined. For the square root function, this is whenever the thing inside the square root is greater or equal to zero. Thus the input is valid when

and the domain would be {x ∈ ℝ | -9/4 ≤ x ≤ 9/4}.
Here is the graph:
graph%28200%2C+200%2C+-3%2C+3%2C+-5%2C+5%2C+sqrt%289-4x%5E2%29%29