Math Formulae List
Subject:
Calculus [1]
SAT Subject Math Level 2 Facts & Formulas Numbers, Sequences, Factors Integers: . . . , -3, -2, -1, 0, 1, 2, 3, . . . Reals: integers plus fractions, decimals, and irrationals ( ? 2, ? 3, pi, etc.) Order Of Operations: PEMDAS (Parentheses / Exponents / Multiply / Divide / Add / Subtract) Arithmetic Sequences: each term is equal to the previous term plus d Sequence: t1, t1 + d, t1 + 2d, . . . The nth term is tn = t1 + (n? 1)d Number of integers from in to im = im ? in + 1 Sum of n terms Sn = (n/2) ? (t1 + tn) Geometric Sequences: each term is equal to the previous term times r Sequence: t1, t1 ? r, t1 ? r2, . . . The nth term is tn = t1 ? rn?1 Sum of n terms Sn = t1 ? (rn ? 1)/(r ? 1) Sum of infinite sequence (r < 1) is S? = t1/(1? r)