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.~ ,::, a functio n I tF rc:x:.) , ir's ti rst;; deriuor ive. ~,(:t)
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1$ olSo o Fu(')Ction. Thus we wf'1 di fferent: 1 ot"e w,~h rts p ctt

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s econd I('>
dH1\lO h ,J Q. of ex, sts on I I' 'Then I
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J. . Ir: ' 1S c. oricau e up on ' 1' r ,, (,".'l..)
iF cind Qr) 13 ;f:' ;, o on I
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Lccrn1 p lC. 1' F1M.I the 1rit.er ual~ 0 (-' concuu 1~~ For .the graph oF j if:
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/J:x f '3-x - (ax
X
x. r 3
I 2 r:;1
c) ~-= z .x - --J3 x= f, 2 In x.
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q\
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3 + 3 :x: 'Z. -1a:.x. . tl

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-- (?c.t -3)-z . ..;. Find ell
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j () t e f U O \ $ OF LU I) i C h
'f ' ' S dt C.J.e O S j ne ,
t_h e 1f)tt(UC IIS Oil w h ich - ~ 1S ceif'lco ue up O[)d

cco ccive down .

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3, l ) ~- 1 (ac ) ~ Li :,e 3 - lox
2


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or 3
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2
Fc:x.) isd ecreas1f)B of'\ c-~ : o_)_ ~__ c~ ; 31z) af\d ~C-x) ,s
o0 c31z ; ~) .