MATH 121 Midterm: MATH 121 Drexel Math121 Exam2 VersionA 201315Solutions
Document Summary
Math 121 - exam 2 - 11/15/2013: for the free response section, you must show all work. Answers without proper justi - cation will not receive full credit. Partial credit will be awarded for signi cant progress towards the correct answer. Cross o any work that you do not want graded: you have 50 minutes to complete this exam. Immediately: you may not use any electronic devices including (but not limited to) calculators, cell phones, or ipods. Problem 1 problem 2 problem 3 problem 4 multiple choice. 2: a 10 foot plank is leaning against a vertical wall. The bottom of the plank is pushed towards the wall at a constant rate of 3 ft/min. How fast is the acute angle that the plank makes with the ground changing at the instant when the bottom of the plank is. 3: compute dy dx if y = (tan x)x. 4: evaluate lim x!+1 (ex + x)1/x.
