{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

21worksheet9

# 21worksheet9 - \$0LUTlD/US,— MATH 122 SECTION 021...

This preview shows pages 1–2. 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: \$0LUTlD/US ,— MATH 122 SECTION 021 WORKSHEET 9 Show all work for full credit. 28 1. Use sum approximations to estimate / f (ac)da: What values of n and A96 did you 10 use? —- n:@ mm M ‘3 MS: /8(3)+ 25(5) + 37(3) “12(3) 435(5) 463(3) = 802? VHS = 25(3)+ 3715M 9213M Mo(3)+’+‘lls) “70633 = loz3 Esl-Wml-L: 807 2/023 = 2. Use sum approximations with n = 5 rectangles to estimate 20 / (3a: — 15)2da7. 8 Then use your calculator to evaluate integral and check the accuracy of your estimate. Ax 208 L n-/52 17.10% 5 2’ m—- so was- LHS: Z‘l ( Sl + 292% + 5H15w 93a3¢+ mass) : 78mg EH8: magma +5H7.5(o+ 930. so Hams»: + 2025) = Magoﬁg 20 Z Ema: W8 Aewgi {ax-15M” Z : low 7.08 = 3. Find the area between the curves y = —x2 + 2:1: + 5 and y = x2 — 4a: — 15. A 5 (w) 5/[’xz+Zx+53-[x2"/><”5>ld>‘ 2 4. In a certain section of the country, the price of gasoline is currently \$3 per gallon. It is estimated that t weeks from now, the price will be changing at the rate of r(t ) = 3.4m? + 1 cents (pper week. How much will gasoline cost 6 weeks from now? Give units. ojjwiétl 6% 1 377/3 654315 l AMA) P/ICC " 3+ DAD : 3'HO \$//a"oy\ Cenis . 5. It is estimated that t days from now a farmer’s crop will be changing at a rate of Mt) = —3t2 + 19.575 — 9 bushels per day. By how much will the value of the farmer’s crop increase in the next week if the market price is \$2 per bushel? Give units. 5 /-3+ nest ‘1)d£=?).7sasms , 1 value: 71.75 bass. 2 WW 6. A particle is moving so that its velocity (in feet per sec) is v(t) = 4 — 523 +252, where t is time in seconds. 8.. Find the Ddisplacement (change in position) of the particle in the ﬁrst 10 seconds. Give “if M 5.97: in“: :- _m l fﬁt b. Find the total distance traveled by the particle in the ﬁrst 10 seconds. Give units. i 'OM—suizla/i [email protected] 0 Seat 7. Using the ure, evaluate the integrals. a. /25g(t)dt=. —8+Z :- 1: b. /Osg(t)dt= “0’8 *2 ’- c./04|g(t)ldt= [Uig‘lﬂ ...
View Full Document

{[ snackBarMessage ]}