Anything

Try to see things in different way

SOME MATH PROBLEMS September 7, 2008

Filed under: Uncategorized — sri anindianti @ 2:10 pm

Pada hari Senin, 1 Oktober 2008, Dosen kami tercinta: Pak Agus Nggermanto memberikan teka-teki matematika.

 

a – b + c – d = 1

-b + c –d + e = 2

c – d + e + a = 3

-d + e + a – b = 5

e + a – b + c = 13

 

Does anybody know how to solve it in a quickly way?

mm….mmm….

( Coba dulu sendiri y!!! Ga pake nyontek!)

Ok, gini caranya:

  1. tambahkan seluruhnya secara bersamaan, sehingga didapat

 

4a – 4b + 4c – 4d + 4e = 24

2. Sederhanakan persamaan tersebut (seluruh variabel dibagi 4)

 

a – b + c – d + e = 4

3. Masukkan persamaan tersebut ke persamaan pertama

 

 

(a – b + c – d) + e = 4

1 + e = 4

e = 5

4. Selanjutnya, tinggal masukkan sendiri ke persamaan berikutnya, dst,

Sehingga diperoleh

 

a = 4 , b = -3 , c = 1 , d = 7

Gimana?? Ternyata sangat mudah bukan…..?!!

See… Jangan melihat masalah dari kerumitan penampilannya aja, tapi pikirkan bahwa kita pasti bisa menyelesaikannya…

stay calm, and be creative!!! ^_^

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