APPM 1340 Midterm: appm1340fall2017exam1_sol

• School: CU-Boulder
• Department: Applied Math
• Course: APPM 1340
• Professor: All

Document Summary

Fall 2017: [12 pts] in your bluebook, write t if the statement is true and write f if the statement is false. No justi cation required and no partial credit given. (a) if x is a any real number whose square equals c, then x always equals the square root of c. (b) sec csc . = tan (c) cos4 4x sin4 4x = cos 8x (d) let w, x, y, z represent positive quantities. Solution: (a) false x = c or |x| = c. (b) true sec csc . 1 cos sin = sin cos . The line through the given points has slope m = 7 2 reciprocal of that line which is 5 y 5 = 5 is (3, 0) and the y-intercept is (0, 5). Rearranging this yields 3y 15 = 5x 30 = 5x 3y = 15 = x. The line passing through (6, 5) with slope 5.