The domain of the function is expressed as D = (-∞, ∞)
The domain of a function is the value of the input 'x' for which the given function exists.
Given the function f(x)= 1/2x^2 +11x +15;
- the domain of the function exists on all real numbers.
- That is the function will exist for any given value of x.
Hence the domain of the function is expressed as D = (-∞, ∞)
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