Key to Practice Midterm II

Problem 1

A.  (Note change dxdy to dydx)  244.6

B.  (Note change the first 3 to a 1)  1350.35

Problem 2

0.121

Problem 3

2.1

Problem 4

A.  2sinxcosx

B.  secx

C.  (e^xtanx - e^xsec²x)/tan²x)

Problem 5

A.  tan²(x) + c

B.  1/3sin³(x) + 1/5 sin⁵(x) + C

Problem 6

A.  2/5

B. DNE

Problem 7

184.5 inches