Given the functions, f(x) = 5x2 - 3x + 1 and g(x) = 2x2 + x - 2, perform the indicated operation. When applicable, state the domain restriction.(f - g)(x)
Question
Given the functions,
perform the indicated operation. When applicable, state the domain restriction.
Solution
To perform the operation (f - g)(x), we need to subtract the function g(x) from f(x).
f(x) = 5x^2 - 3x + 1 g(x) = 2x^2 + x - 2
Subtract g(x) from f(x):
(f - g)(x) = (5x^2 - 3x + 1) - (2x^2 + x - 2)
Distribute the negative sign to each term in the parentheses:
(f - g)(x) = 5x^2 - 3x + 1 - 2x^2 - x + 2
Combine like terms:
(f - g)(x) = (5x^2 - 2x^2) + (-3x - x) + (1 + 2)
This simplifies to:
(f - g)(x) = 3x^2 - 4x + 3
There are no domain restrictions for this function because you can plug any real number into the function and get a real number out.
Similar Questions
Given the function, g(x)=3xx−4𝑔(𝑥)=3𝑥𝑥−4 , when finding the domain we must exclude
For the pair of functions f(x) = 4x2 + 3x + 5 and g(x) = 3x - 3Find (g ∘ f)(x).
For the pair of functions f(x) = , g(x) = x + 3.Find the domain of f ∘ g.Group of answer choices(-∞, -6] ∪ [-6, ∞)(-∞, -5) ∪ (-5, ∞)(-∞, ∞)(-∞, -8) ∪ (-8, ∞)
Let f (x) = √x − 1 and g(x) = 1x − 2 .(i) State the domains for f and g, and the range of f .
For f(x) = –√(x – 5) – 2, what is the domain of f-1?Question 3Select one:a.(–∞, 2]b.[2, ∞)c.(–∞, –2]d.[–2, ∞)e.None of these
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.