9 Questions
What is the degree of the polynomial function f(x) = 4x^3 - 2x^2 + x + 5?
3
In the polynomial function g(x) = -7x^4 + 2x^2 - 3x + 1, what is the leading coefficient?
-7
Which of the following represents a polynomial function of degree 5?
h(x) = x^5 + 2x^3 - 4x
What is the leading coefficient in the polynomial function p(x) = -9x^2 + 7x + 2?
-9
If q(x) = 8x^3 + 5x^2 - x - 3, what is the degree of the polynomial function q(x)?
3
Which polynomial function has a leading coefficient of -5?
r(x) = -5x^4 + 3x^2 - 8x + 1
What is the degree of the polynomial function s(x) = x^6 - 3x^4 + 5x?
6
Which of the following polynomial functions has a leading coefficient of 4?
-x^4 + 4x^3 - x^2 + x
In a polynomial function t(x), if the highest power term is x^5, what is the degree of this polynomial?
5
Study Notes
Polynomial Functions
Introduction
Polynomial functions are fundamental concepts in mathematics, particularly in algebra and calculus. They are essential for understanding various aspects of mathematics, physics, engineering, economics, and many other scientific disciplines. In this article, we will discuss polynomial functions, focusing on their degree, leading coefficient, and factoring.
Polynomial Functions
A polynominal function is an algebraic expression that involves adding and subtracting powers of one variable (often denoted x) and multiplying these terms by coefficients, which can be any real number. The most general form of a polynomial function is:
f(x) = ax^n + bx^(n-1) + ... + cx^2 + dx + e
where a, b, c, d, and e are constants, x is the variable, and n represents the highest power of x. This form is also known as the standard form of a polynomial equation. For example, f(x) = 3x^2 - 2x + 1 is a polynomial function with variable x and exponent powers 2, 1, and 0.
Degree of a Polynomial Function
The degree of a polynomial function refers to the highest power of the variable it contains. In our example f(x) = 3x^2 - 2x + 1, the degree is 2, since the maximum exponent appearing in the quadratic term x^2 is 2.
Leading Coefficient
The leading coefficient is the coefficient of the term with the highest degree. In f(x) = 3x^2 - 2x + 1, the leading coefficient is 3. It determines the type of end behavior the graph will have, depending on whether the leading coefficient is positive or negative.
Factoring Polynomials
Factoring polynomials involves breaking them down into simpler expressions by recognizing their factors. For example, f(x) = x^2 - 4 can be factored as (x-2)(x+2). The two terms in brackets are called factors of the polynomial. In general, a polynomial function with degree n has at most n non-zero coefficients. This upper bound is known as the Bezout's theorem. However, not all polynomials can be factorized or have roots (i.e., they may be prime or irreducible).
Explore the fundamentals of polynomial functions, including their degree, leading coefficient, and factoring. Learn how to identify the degree of a polynomial, determine the leading coefficient, and factorize polynomials into simpler expressions. Dive into the world of algebra and calculus with this comprehensive guide to polynomial functions.
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