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Quiz #4 (2.3, 2,4, & 2.5) Classlb: Math 1210 - Name: 008 Fall 2012 Instructions: - September 18, 2012 Score Instructor: Katrina Johnson all of your work as partial credit will be and there may be NO credit given for problems without supporting work All answers should be completely simplified. unless otherwise stated. You may NOT use a calculator. You may use a 3x5 index card. Complete each problem. Show given where appropriate, (14 pts) 1. Find the derivative of the following functions, 7 + 5x 4 + lOx a) y = —4x 2 x —3 * +2oy b) f(x) = 3 3x _::x -2 (bo NOT bother simplifying.) f(x)= c) y = 3 (5x + )(2x 2 4x 3 — tan x) (bo NOT bother simplifying.) dy (6 pts) 2. Show that D (cotx) 1 = x 2 —csc — H -f 3 5 0 0 -I. 0 —1 z 0 0 I H