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Exam 1 Answers

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hifer:
My answers:
1) [x^2(3sinx - xcosx)] / (sinx)^2
2a) (e^2 - 10)/6
b) 2
3a) Derivative graph
3b) R\ {0, 3} or (-oo, 0) U (0,3) U (3, oo)
4) 2/3
5) 5/16
6a) 5/24
b) 1/3
7) (1/9)sin3x - (1/3)xcos3x
8a) x = 2, 5/2
b) 7/4
9a) y=-2x+2
b) 2(e^(1/2) - 1)
10) I got this wrong, ans is k= 2/3  Anyone rmb how many marks this was worth?
11a) 0.68
11b) 8/17
12) P(4,2) OP = 2sqrt(5)

kido_1:
Pretty much similar answers, except for the prob questions.

JohnS:
For 10, k=3/2, not 2/3

hifer:

--- Quote from: "JohnS" ---For 10, k=3/2, not 2/3
--- End quote ---


yup my mistake again ><

hifer:

--- Quote from: "kido_1" ---Pretty much similar answers, except for the prob questions.
--- End quote ---

Wat did u get for the prob ques? i'm pretty sure i got them right..

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