A radical function is a function that contains a radical with a variable in its radicand.
These functions are radical functions:
Domain: The domain is all values that x can take on. The only problem you have with this function is that you cannot have a negative inside the square root. So you'll set the insides greater-than-or-equal-to zero, and solve.
Range: The range requires a graph.
Find the domain of f(x)=
The expression under the radical has to satisfy the condition 15-2x-x2 >
0 for the function to take real values.
Evaluating at several points:
Then the domain is [-5,3]
Determine the domain of the given function:
To use interval notation
: Write -i to get the symbol and write i to get the symbol