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B.f '(X D.f '(x
0
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2. ÇúÏßf(x)=ÔÚµã(1, f(1)) A.1 B.-1
C.7 D.-7
3. ÒÑÖª f(x)=x(2 014+ln x), Èô f '(x A.e2 B.1
C.ln 2
D.e
0
)=2 015,±´U XF( )
4. ÒÑÖªy=f(x)Êǿɵ¼º¯Êý£¬Èçͼ£¬Ö±Ïßy=kx+2ÊÇÇúÏßy=f(x)ÔÚx=3´¦µÄÇÐÏߣ¬Áîg(x)=xf(x),g'(x) ÊÇg(x) µÄµ¼º¯Êý£¬Ôòg'(3)=(
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A.-1 B.0 C.2 D.4
5. ÒÑÖªf(x)Ϊżº¯Êý£¬µ±xW0ʱ£¬f(x)=e -x-1 -x,±´UÇúÏßy=f(x)ÔÚµã(1,2)´¦µÄÇÐÏß·½³ÌÊÇ _______________. 6. ÒÑÖªa€ R,É躯Êýf(x)=ax-ln x µÄͼÏóÔÚµã(1, f(1)) Ϊ _______ .
7. ÒÑÖªº¯Êýf(x)=e X-mx+1µÄͼÏóΪÇúÏß C,ÈôÇúÏßC´æÔÚÓëÖ±Ïßy=ex´¹Ö±µÄÇÐÏߣ¬ÔòʵÊýmµÄÈ¡Öµ·¶Î§ Ϊ _______ .
8. ÒÑÖªº¯Êýf(x)=x-,g(x)=a(2-ln x)(a>0). µÄÖµ,²¢ÅжÏÁ½ÌõÇÐÏßÊÇ·ñΪͬһÌõÖ±Ïß
.
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9. ÒÑÖªº¯Êýf(x)=x -2x +3x(x € R)µÄͼÏóΪÇúÏß C.
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10. ÒÑÖªº¯Êýf(x)=e -2ax,g(x)=-x -ax .Èô²»´æÔÚXI,X2€ R,ʹµÃf '(x i)=g'(x 2),ÔòʵÊýaµÄÈ¡Öµ·¶Î§Îª ( ) A.(-2,3) C.[-2,3]
B.(-6,0) D.[-6,0]
2
11. ÒÑÖªf(x)=acos x,g(x)=x a+b=( A.-1
) B.0 C.1
D.2
+bx+1,ÈôÇúÏßy=f(x)ÓëÇúÏßy=g(x)ÔÚ½»µã(0,m)´¦Óй«ÇÐÏߣ¬Ôò
12. Èôº¯Êýf(x)=ln x+ax µÄͼÏó´æÔÚÓëÖ±Ïß 2x-y=0ƽÐеÄÇÐÏߣ¬ÔòʵÊýaµÄÈ¡Öµ·¶Î§ÊÇ ___________ . __ 13. É躯Êýf(x)=ax-, ÇúÏßy=f(x)ÔÚµã(2, f(2)) (1)Çóf(x)µÄ½âÎöʽ£»
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7x-4y-12=0.
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x=0ºÍÖ±Ïßy=xËùΧ³ÉµÄÈý½ÇÐεÄÃæ»ýΪ¶¨Öµ
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1.D 2.C 3.B 4.B 5. ´ð°¸ y=2x
½âÎö µ± x>0 ʱ£¬-x<0, f(-x)=e
x-1
+x,¶ø f(-x)=f(x), ËùÒÔ f(x)=e x-1+x(x>0)£¬µã(1,2)ÔÚÇúÏß
? (x -1),¼´
f(x)=e x-1 +x(x>0)ÉÏ,Ò×Öª f '(1)=2, ¹ÊÇúÏß y=f(x)ÔÚµã(1,2)´¦µÄÇÐÏß·½³ÌÊÇ y- 2=f '(1) y=2x. 6. ´ð°¸ 1
½âÎö ±¾ÌâÖ÷Òª¿¼²éµ¼ÊýµÄ¼¸ºÎÒâÒåÒÔ¼°Ö±Ïß·½³ÌÓë½Ø¾à . ÓÉÌâÒâ¿ÉÖª f '(x)=a-, ËùÒÔ f '(1)=a-1,
ÒòΪ f(1)=a, ËùÒÔÇеã×ø±êΪ (1,a), ËùÒÔÇÐÏß l µÄ·½³ÌΪ y-a=(a-1)(x-1), ¼´ y=(a-1)x+1. Áî x=0, µÃ y=1,
¼´Ö±Ïß l ÔÚ y ÖáÉϵĽؾàΪ 1. 7. ´ð°¸
½âÎö º¯Êý f(x)=e x-mx+1 µÄµ¼º¯ÊýΪ f '(x)=e x-m, ҪʹÇúÏßC´æÔÚÓëÖ±Ïßy=ex´¹Ö±µÄÇÐÏߣ¬ ÔòÐè ex-m=-Óн⣬¼´ m=e+Óнâ, ÓÉex>0,µÃm>,ÔòʵÊýmµÄÈ¡Öµ·¶Î§Îª. 8. ½âÎö ¸ù¾ÝÌâÒâÓÐ
ÇúÏß y=f(x) ÔÚ x=1 ´¦µÄÇÐÏßбÂÊΪ f '(1)=3, ÇúÏß y=g(x) ÔÚ x=1 ´¦µÄÇÐÏßбÂÊΪ g'(1)=-a. ÓÖ f '(1)=g'(1), ËùÒÔ a=-3.
ÇúÏß y=f(x) ÔÚ x=1 ´¦µÄÇÐÏß·½³ÌΪ y-f(1)=3(x-1), µÃ y+1=3(x-1), ¼´ÇÐÏß·½³ÌΪ 3x-y-4=0.
ÇúÏß y=g(x) ÔÚ x=1 ´¦µÄÇÐÏß·½³ÌΪ y-g(1)=3(x-1), µÃ y+6=3(x-1), ¼´ÇÐÏß·½³ÌΪ 3x-y-9=0, ËùÒÔÁ½ÌõÇÐÏß²»ÊÇͬһÌõÖ±Ïß . 9. ½âÎö (1) ÓÉÌâÒâµÃ f '(x)=x Ôò f '(x)=(x-2)
2
2
-4x+3,
-1> -1,