- #1
NneO
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Homework Statement
find the polynomial function p(x) with zeros, -1, 1, 3 and P(0)=9
Homework Equations
all i have is (x^2-1) and (x-3)
NneO said:Homework Statement
find the polynomial function p(x) with zeros, -1, 1, 3 and P(0)=9
Homework Equations
all i have is (x^2-1) and (x-3)
The Attempt at a Solution
In order to find a polynomial function with given zeros, you will need to use the factored form of the polynomial. This form is written as f(x) = a(x - r1)(x - r2)...(x - rn), where r1, r2, ..., rn are the given zeros. Then, you can expand the equation and solve for the coefficient "a" by plugging in the values of the zeros and the corresponding y-values.
If there are repeated zeros in the polynomial function, you will need to use the multiplicity of the zero to determine how many times it should be factored into the equation. For example, if a zero has a multiplicity of 2, it should be factored twice in the equation. This will change the form of the polynomial to f(x) = a(x - r)^2.
Yes, you can use long division to find the polynomial function with given zeros. However, this method is more time-consuming and is typically used when the given zeros are not whole numbers. It involves dividing the polynomial by the factors (x - r) and repeating the process until the remainder is equal to 0.
If you are given the graph of the polynomial function, you can use the x-intercepts (zeros) to determine the factors of the polynomial. From there, you can use the factored form to find the polynomial function. You can also use the y-intercept to determine the value of the coefficient "a."
Yes, you can use synthetic division to find the polynomial function with given zeros. This method is more efficient than long division and is typically used when the given zeros are whole numbers. It involves setting up a table and using the given zeros to divide the polynomial. The final row of the table will give you the coefficients of the polynomial function.