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Math 175-02 Name ]
Exam #4; Fall 2000 12-7-00
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1.(10 %) Eliminate the parameter to find the Cartesian, ie., (x,y) equation of the following
parametric curve. Sketch the curve. 2 = sint, y=cos’t, O<t<2n.
wns t set =/ ag -lex<l
BOG! } oe
yet Xe \
Opi. = Lay - --- Xx
Li Cyemb Of
2.(10 %) Find the equation of the tangent (slope) to the curve a = 3é? +1, y = 2¢3 + Lat the
point (4, 3).
xe = LG/ +4 or c3/ fal (¢ i/
por Beles or bef C1 oo
/ ee
Of. ff. Ef f=
Ae xX Et “ / /
(4,3 )
3.(15 %) Use the parametric equations of the cycloid, given byr= 6—sin8, y=1—cosé,
0 <4 < 2n to find the area that it encloses.
HINT ; Remember: cos? = (1 + cos 26). Xl b= CE
B aa
a / f_ o
Ae [lye rattle « [(-cest) (ete JAB -
x °
oi oe
- fo “Line + Cone \Ae
C
~ ey ty COLL E del &
x
¢
3 ; / oe /”
ER > PINE fa SE
x 4 /
- a“
324 SY. By
C
x a
4.(20 %) (a) Use the Maclaurin series for cosz = z et 22” to find the number series for
fo TI cos (x?) dz. (b) Approximate the value of the “integral by the first three terms of the series.
Aart
o ney ¥\, ae 4n fe 3 ee a1)" ane -
(fy CAC FF texte a pa th
“ a von hart
Bh 57 (-i)" (=
[ot ocds “Zeculn e,
ue oe
f 4 i ft (i 3
‘ | = G25 ()
spe coh —_ Lae
5,(20 % ) (a) Find the Taylor polynomial of degree n ns = 2 of f(z) = vite about a = 0.
(b) Use Taylor's remainder |R,.(x)| < may jc — a["+? where |f*)(x)| < M to
Vite fordO<2<01.
i
estimate the accuracy of the approximation f(x) *
[
Lf)
{
}
—--4
1
| Oo | pod
poof 2
i 1 i | aa
| 2} “hy / [ x)=
3 nc ee ne
3
: a wet
ca see
FOr sae ~ &
. 3 7. 43 / a 2
OS 57) = ge en [ecee cuca |