blogg..

Well, I have not been feeling too well this weekend and i almost forgot about blogging! so that is why i am so late, but anyways.. This week Mrs. Robinson was out a lot , I think it was two days. While she was out we did worksheets on domain and range; which is not so bad, and on factoring which is pretty simple. Ill blog on Domain and Range because many people seemed to have problems with this.
Ex.
x^5+3x-2

first, we figure out whether the equation is a polynomial, an absolute value, a fraction, or a square root. Because the equation does not have a variable in the denominator it therefore is a polynomial.

the domain of a polynomial is always (-infinity, infinity) <-- you have to pay attention to the parenthesis also. Parenthesis only go with infinities and fractions.

The Domain of example one is (-infinity, infinity)
the range is also (-infinity, infinity)

when the exponent of the polynomial ( the greater one) is even the range is (-infinity, infinity) it it is even, then it would be the [number, then infinity)


ex.2 l-4xl +3

the domain of an absolute value is (-infinity, infinity)
the range is the [vertical shift, infinity)