Algebra Flashcards
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Synthetic Division
is dividing by a binomial which is in the form x-c where C is the synthetic divisor.
Power function
is the simplest polynomial function in the form F(x)=a^nX^n
Degree of a polynomial
is the value of the greatest exponent
leading co-efficient
is the Co. of the first term of a polynomial in standard form
Intermediate Value theorem
states given P(x) with real co-efficients if p(a) and p(b) have opposite signs there is at least one real number ācā beteen A and B such that P(c)=O
relative maximum
a point where the function changes from increasing to decreasing
relative minimum
is a point where the function changes directions from decreasing to increasing.
extrema
are the maximum and minimum value of a function
turning point
a point where the function changes directions from increasing to decreasing or switched
Prime
a polynomial that cannot be factored
sum of CUBES a^3 + b^3
(a+b)(a^2-ab+b^2)
difference of cubes
(a-b)(a^2+ab+b^2)
quadratic form
is an expression written as au^2+bu+c for any real numbers and a cannot equal zero
reduceable quadratic equation
is any equation that can be written in quadratic form by using u-subsitution
remainder theroem
states if a polynomial p(x) iis divided by (x-c) using synthetic division the remainder is equal to p (c)
synthetic subsitution
is when the remainder theroem is applied to evaluate a function
depressed polynomial
is when the quotient of the polynomial is divided by a binomial resulting in a polynomial which is one degree less.
factor therom
states for a polynomial if p(c)=0 then x-c is a factor of p(x)
fundamental theorem of algebra
states the polynomial of the n-degree of n has exactly n roots is the set of complex numbers incuding repeated roots
Descartes rule of signs
a method used to determine real zeros , negative real zeros, and imaginary zeros.
complex conjugate theorom
states if a+bi is a zero of a polynomial, then a-bi is also a zero
integral co-efficent
is a constant multiplier of a variable that is an integer
Rational zero thrm
states if p(x) is a polynomial with integral co-efficent than every rational zero of p(x)=0 is of the form p/q where p is a factor of the constant Term and q is a factor of the leading factor.