Monday October 30

Monday October 30

Pages 644-645

Problem 2,

(a) k = ln(8) (b) P(t) = 60*8^t,

(c) P(8) = 1,006,632,960, (d) P'(8) » 2.093 billion

(e) t = ln(100/3)/ln(8)

Problem 4,

(a) k = (1/2)ln(8), y(0) = 50 (b) y = 50*8^t/2,

(c) t = 40 min (d) t » 7.3 hr

Problem 8,

(a) y(t) = 200*2^-t/140 ,(b) y(100) » 121.9 mg

(c) t = 140ln(20)/ln(2)

Problem 12,

y = 5e^2x

Monday Nov 1

Pages 644-645

Problem 14 (a) y(2) » 8.3 C (b) t » 3.6 mim

Problem 16

Annually $649.80

Quarterly $658.40

Monthly $660.49

Daily $661.53

Hourly $661.56

Continuously $661.56

Problem 18 About 11.55 years

Problem 20

(a)

(b)

(c) about 12.15 years

Monday Nov 3

Pages 476

Problem 2

arctan(-1) = -Pi/4,

csc^-1(-1) = Pi