Tuesday, January 28, 2014



General forms of a sequence

 Arithmetic---the same number is added or subtracted from each element to get the next element in the sequence.
Examples--- 3,7,11,15,19
Formula--- an = a1 + (n – 1)d





Geometric---- the same number is multiplied or divided by each element to get the next element in the sequence.
Examples----2, 6, 18, 54
Formula---    an = a1 . r(n - 1)

Monday, January 27, 2014






domain-left/right
range-up/down

end behavior 
left- x->-x < up= y->+∞ down= y->-∞
right- x -> +x< up=y-> -∞ down y->-∞

absolute max/min--- max=highest min= lowest

local max/ min--- local max=largest value within a given point local min= smallest value within a given point

interval of increase--- interval where the function's slope is positive.
Interval of decrease--- interval where a function's slope is negative.

X intercept--- the point where the line crosses the x axis
Y intercept--- the point where the line crosses the y axis

Symmetry--- determining whether or not the function is even or odd

Even--- symmetric across y axis
Odd--- symmetric if you flip the negative part of the graph across the x-axis.
Neither--- not even or odd

Asymptotes--- a line that continually approaches a given curve but does not meet it at any finite distance.

Function--- relationship between values
One to one--- passes both the vertical line test and the horizontal line test.