교과서 질문
Write each formula as an English phrase using the word varies or proportional. C=2πr, where C is the circumference of a circle of radius r.
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Ch. 3 - Polynomial and Rational Functions
Lial13th EditionCollege AlgebraISBN: 9780136881063
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4장, 문제 21
Use synthetic division to perform each division. (x3 - 1) / (x-1)
검증된 단계별 안내1
Identify the divisor and the dividend. The dividend is \(x^3 - 1\) and the divisor is \(x - 1\).
Set up synthetic division by writing the coefficients of the dividend. For \(x^3 - 1\), the coefficients are \(1\) (for \(x^3\)), \(0\) (for \(x^2\)), \(0\) (for \(x\)), and \(-1\) (constant term).
Determine the value to use in synthetic division from the divisor \(x - 1\). Since the divisor is \(x - 1\), use \(1\) (the root of \(x - 1 = 0\)) for synthetic division.
Perform synthetic division: bring down the first coefficient, multiply it by \(1\), add to the next coefficient, and repeat this process across all coefficients.
Write the result of synthetic division as the quotient polynomial with one degree less than the dividend, and identify the remainder if any.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
5m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Synthetic Division
Synthetic division is a shortcut method for dividing a polynomial by a linear binomial of the form x - c. It simplifies the long division process by using only the coefficients of the polynomial, making calculations faster and less error-prone.
추천 영상:
05:10
Higher Powers of i
Polynomial Division
Polynomial division involves dividing one polynomial by another, similar to numerical division. Understanding how to divide polynomials helps in simplifying expressions, finding factors, and solving polynomial equations.
추천 영상:
05:13Introduction to Polynomials
Remainder Theorem
The Remainder Theorem states that when a polynomial f(x) is divided by x - c, the remainder is f(c). This concept helps verify the result of synthetic division and understand the relationship between division and function evaluation.
추천 영상:
05:10Higher Powers of i
관련 실천
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If ƒ(x) is a polynomial function with real coefficients, and if 7+2i is a zero of the function, then what other complex number must also be a zero?
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Use an end behavior diagram, as shown below, to describe the end behavior of the graph of each polynomial function. ƒ(x)=5x5+2x3-3x+4
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교과서 질문
Graph the following on the same coordinate system.
(a) y = x2
(b) y = 3x2
(c) y = 1/3x2
(d) How does the coefficient of x2 affect the shape of the graph?
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교과서 질문
Use the factor theorem and synthetic division to determine whether the second polynomial is a factor of the first. See Example 1.
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