Polynomials Flashcards
Terms
An equation consisting of both a number and a variable.
Example:
3x^2 -> in this case, x is the variable, and 3 is the number. We can also have just x, since we can have 1x^1 = x, and we can have just 5, since 5x^0 = 5.
Polynomial
A polynomial is multiple terms either added or subtracted together. This can be represented as 3x^2 + 2x^3.
Identity
p(x) = x^2 - 2 would be an example. Simply put, a polynomial which has a solution x.
Root
What makes the polynomial, or identity, 0. For example, we could have p(x) = x^2 - 2, in which the root would be √2.
Coefficient
The “number” in the term.
Scalar Multiplication
We get the value alpha and multiply every coefficient (Ck) by a (alpha).
Degree of a Term
The degree of a term is all of the powers of a term added together.
Degree of a Polynomial
The degree of a polynomial is the highest power of all the terms in the polynomial.
Addition of polynomials
Add matching coefficients ; p(x) + q(x)
Multiplication of polynomials
Multiplying the two polynomials p(x) and q(x) will give a degree of m + n, which is their own degrees respectively.