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KUNCI JAWABAN MATEMATIKA EKONOMIUAS GASAL 2011/2012 - MANAJEMEN S1 SEMESTER 1

FAKULTAS EKONOMI UMK 

1.Diketahi! - ME " #2-#-20- S " $%-1$

Dita&'aka&! ηD (a& ηS)

 Ja*a+!

D"S ME, a(i D = S – ME

= $%-1$ . #2-#-20 " $%-1$ - #2#20

  D = - X2 +6X+5

ME " #-2-#-20

  0 " ##-$

# "- (a& #"-$ (i3i4ih 'a&5 367iti8, a(i X= 5  3 " $#-$ " $ $-$ " 2$-1$

 p = 10

a)  ηD)D " - #29#$ D: " -2#9 "

-2$9 " -109

b) S " $%-1$ S: " $

2.Diketahi ! MR " 10 (a& MC " #2-;#9Dita&'aka&!

a) X?• S'a>

  X= 4

(   π?a%)

π?a% MR " MC 10" #2-

;#9  #2-;#- " 2-;- " 19-

12-"0

  max = 0

b) TR?

 

 J?4ah ! TR " 10# " 10

e  ?π " TR-TC π " 10#-9/;

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  TR = 40  " 10- " 0 - "

"

c) p?

p = 10

f) TC ?

  9#

9#

" 9

  TC" 2

 

3.Diketahi ! De?a&( ;@"$-0,$ 32

  S334' 0,1$32"1$ - @

  e ! $Dita&'aka& !

a SUR!US "#$SUME$ %CS)? Ja*a+!;@"$-0,$ 32 @ " 2$-0,2$2

  2$"0,2$ 2

  100"2

  = 10

CS "

CS "

CS "

CS " -

CS " -

CS " 2$0-;,; . 11,$CS " 199, . 11,$

CS = 52&15

+SUR!US R#DUSE$ %S)? Ja*a+!

0,1$32"1$ - @ @ " 0,1$32-1$

 @ " 0,2$32-2$0 "0,2$32-2$

2$ "0,2$ 2

  100 "2 = 10

S "

S "

S "

S " -

0 10

@ 2

$

0

0 1

0@ 2

$

0

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S " -

S " 11,$ - 2$0-;,;S " 11,$ . 199,

S = -52&12