Let f(x) = 3x2 + x − 3 and g(x) = x2 − 5x + 1. Find f(x) − g(x).
The relationship between independent and dependent variable is defined by the function. It is denoted by f(x).
Answer: The value of f(x) - g(x) is 2x2 + 6x − 4.
Let's find f(x) − g(x).
Explanation:
We know that (f - g)(x) = f(x) - g(x).
The domain of f(x) - g(x) consists of the numbers x that are in the domain of f and the domain of g.
⇒ f(x) - g(x) = (3x2 + x − 3) - (x2 − 5x + 1)
⇒ f(x) - g(x) = 3x2 + x − 3 - x2 + 5x - 1
⇒ f (x) - g (x) = 2x2 + 6x − 4
Thus, f(x) - g(x) is 2x2 + 6x − 4.
Math worksheets and
visual curriculum
visual curriculum