Math120 f07 test3

# Math120 f07 test3 - 1. 2. t - h N : l The following foreign...

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1. 2. t - h N : l The following foreign exchange rates were printed in the newspaper, where 1; denotes US dollars, J denotes Jodanian diners, and M denotes German mark . _d.l_ = 9.11.! __CLM_ = 1.03M. d\$ 1\$ d\$ 1\$ Compute the following ratios and express them in "propeyform. Z) a) d\$/dJ = EH 7 ’ 6/00 b) dM/dJ c) dJ/dM ll d) Write out the correct equation (e.g. y = mx) for changing marks to dinars,i.e., the equation for how many dinars you get for so many marks. \ Consider the function f(x) = (x - 2)(x2 - x - 2) + 1 on the interval [0, 5]. Find the coordinates (x, f(x)) of the point where fog) assumes (\l ’ my,“ “H. 2 [f a) its maximumon [0, 5], \_' ’l' ti; * l ,1“ All y ) l O (Q ., b) its minimum on [06 M's limits u I “' ‘\. - hi 4,. For each function f(><), calculate f’(x) and f "(x) and simplify. Then, for each number x = a, calculate f(a), f’(a), and f "(a), l.e., the three fan‘s. Finally, graph the point (a,f(a)), the tangent line at (a,f(a)), and the graph of f(x) (from the three facts). 3. f(x) = e(2>< — 4) and a = (2). 4 , a} 2X" 5?}: e2“ “.2 X? ‘ Q '2 r m l:'”¥.?'-i)"l) 1(2)” Eéi . A, L @ a) . W . = Z , 7‘: f(x)=x4—4x2+2x and azl. ’2 . \$1ﬁ4x3_ gm: \ZX axe) 5. Elasticity of Demand. A video club has estimated that the demand equation for the rental of tapes is given by 45; ab: r(p) = 104/40 «p12 -.-. 3419):. l0'(‘I'0-"1°)J where p is the price, \$0 < p < \$6.25, and %_is rentals per week. Currenth the rental Price is \$2. ‘ Q m: 40' (z 1. f(2) = .1: 3— (2-). 5. Is the demand elastic, unitary, pr inelastic at this price? amt-(Md 6. If the rental price is increased by 4. 51, what will probany be the Change in the number of rentals 1E'er week? “ “EN 09 ...
View Full Document

## This test prep was uploaded on 02/15/2008 for the course MATH 120 taught by Professor Staff during the Fall '06 term at UCSD.

### Page1 / 3

Math120 f07 test3 - 1. 2. t - h N : l The following foreign...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online