advertisement

These are the formulas you will be given on the final exam. You should assume that all others which relate to the topics I said to focus on will need to be memorized. Note that on the exam I will not label which formulas are used for what. You need to know when and how to apply each one. • nth term formulas: Arithmetic: an = a1 + (n − 1)d and an = an−1 + d Geometric: an = a1 rn−1 and an = an−1 r • nth partial sum formulas: Arithmetic: Sn = Geometric: Sn = n(a1 +an ) 2 a1 (1−rn ) and 1−r for an infinite sum S = a1 1−r Looking through your book, I notice that there are more concepts, rather than formulas, to memorize. Formulas you will need to memorize are for • the equation of a line • the slope of a line • the midpoint of a line • the distance between two points • the quadratic formula • the properties of logarithms • the inverse of a 2 × 2 matrix • cofactors for finding the determinant of a matrix. The rest of the memorization will be to understand the concepts behind solving problems within the topics listed in the final exam review sheet. 1