Some WebAssign operators: Available operators: + for addition − for subtraction or for the negative sign * for multiplication / for division ** or ∧ (example) Available operators: (example) x+1 sin, cos, tan, sec, csc, cot asin, acos, atan functions (angle x expressed in radians) sin(2x) sqrt() for square root of a number sqrt(x/5) pi for 3.14159... 2 pi x e for scientific notation 1e3 = 1000 () where necessary to group terms 4/(x+1) or 3(x+1) x∧ (1/n) for the nth root of a number x∧ (1/3) or (x − 3)∧ (1/5) x−1, or −x 4*x, or 4x x/4 for exponential ln() for natural log exp() for “e to the power of” x**3 or x∧ 3 ln(x) exp(x) = ex Some WebAssign rules: 1. Numerical answers within 2% of the actual answer are counted as correct. This feature is provided to account for rounding errors in calculations. In general, enter three (3) significant figures for numerical answers. 2. Numbers may be entered in several formats - including scientific notation and numerical expressions, such as fractions. Please note that WebAssign uses standard scientific or “E” notation for “times 10 raised to the power” (1E3 is the scientific notation for 1000). 3. Numerical answers may not contain commas or equal signs. Entries must be only numbers and E for scientific notation, or the mathematical operators −, +, *, and /. For example, if your answer to a question is the fraction “one over sixty-four,” you may enter the response in any of these formats: 1/64 0.015625 0.0156 .0156 1.5625E-2 Please note, however, that the following formats would be graded as incorrect on a numerical question: O.015625 where the first character is the letter “O” not a numeral. 0. 015625 where there is an improper space included in the answer. 1.5625 E-2 where ther is an improper space using “e” notation. l/64 where the first character is a lowercase letter “L” not a numeral. 0.0156 inches where units are not allowed in numerical answers. 5,400 where there is a comma in the number. 1234.5=1230 where there is an equal sign.