Question 437045: How do you find the leading coefficient, degree, odd or even, LHEB, and RHEB, the domain, and range of f(x)=x^9-2x^2+3 ??
Thanks
Answer by Edwin McCravy(20064) (Show Source):
You can put this solution on YOUR website! How do you find the leading coefficient, degree, odd or even, LHEB, and RHEB, the domain, and range of f(x)=x^9-2x^2+3 ??
The leading coefficient is the coefficient of the term with
the largest exponent of x. That term is x9 and its
coefficient is 1 understood.
The degree IS that largest exponent 9
That degree is odd, because 9 is odd.
RHEB (right hand extreme behavior) is upward because the leading
coefficient 1 is POSITIVE.
LHEB (left hand extreme behavior) is downward because the rule is:
1. If the degree is even, the LHEB is the SAME as the RHEB
2. If the degree is odd, the LHEB is OPPOSITE the RHEB
and since the degree 9 is odd, it is opposite the RHEB.
The domain of every polynomial function, EVEN or ODD, is (-∞,∞)
The range of every ODD-DEGREE polynomial function is (-∞,∞)
[However the range of an EVEN-DEGREE polynomial is NEVER (-∞,∞),
but is always either (-∞,MAXIMUM], or [MINIMUM,∞), where
the maximum or minimum is a finite real number]
But this one is an ODD polynomial, so its domain and its
range are both (-∞,∞)
Here is its graph
Edwin
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