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Math 150a Midterm #3. April 28, 2006
Attention! Please, note that this is the closed book test. You are not allowed to use graphing
calculator. Simple calculators are allowed. Please, show all important steps in you solution but do
not make your solution excessively long.
1. a) (7pt) Write the following sum using sigma notations. DO NOT CALCU-
LATE!
sin(2x)
3
+
sin(4x)
6
+
sin(6x)
9
+ . . . +
sin(22x)