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Pada jajargenjang di atas,  mewakili  dan  mewakil...

Pada jajargenjang di atas, begin mathsize 14px style stack A B with rightwards harpoon with barb upwards on top end style mewakili begin mathsize 14px style u with rightwards harpoon with barb upwards on top end style dan begin mathsize 14px style stack A D with rightwards harpoon with barb upwards on top end style mewakili begin mathsize 14px style v with rightwards harpoon with barb upwards on top end style. Sederhanakan persamaan berikut dan nyatakan ke dalam begin mathsize 14px style u with rightwards harpoon with barb upwards on top end style dan begin mathsize 14px style v with rightwards harpoon with barb upwards on top end style.

d. begin mathsize 14px style stack A B with rightwards harpoon with barb upwards on top plus stack P D with rightwards harpoon with barb upwards on top times stack C P space with rightwards harpoon with barb upwards on top times stack A D with rightwards harpoon with barb upwards on top end style 

  1. begin mathsize 14px style horizontal ellipsis end style 

  2. begin mathsize 14px style horizontal ellipsis end style 

Jawaban:

Pada jajargenjang di atas, begin mathsize 14px style stack A B with rightwards harpoon with barb upwards on top end style mewakili begin mathsize 14px style u with rightwards harpoon with barb upwards on top end style dan begin mathsize 14px style stack A D with rightwards harpoon with barb upwards on top end style mewakili begin mathsize 14px style v with rightwards harpoon with barb upwards on top end style. Sederhanakan persamaan berikut dan nyatakan ke dalam begin mathsize 14px style u with rightwards harpoon with barb upwards on top end style dan begin mathsize 14px style v with rightwards harpoon with barb upwards on top end style.

d. begin mathsize 14px style stack A B with rightwards harpoon with barb upwards on top plus stack P D with rightwards harpoon with barb upwards on top times stack C P space with rightwards harpoon with barb upwards on top times stack A D with rightwards harpoon with barb upwards on top end style 

Jawab : karena begin mathsize 14px style P end style merupakan titik potong pada diagonal  jajargenjang, maka begin mathsize 14px style P end style terletak di tengah diagonal begin mathsize 14px style B D end style dan begin mathsize 14px style A C end style

begin mathsize 14px style stack A B with rightwards harpoon with barb upwards on top equals u with rightwards harpoon with barb upwards on top rightwards double arrow stack B A with rightwards harpoon with barb upwards on top equals negative u with rightwards harpoon with barb upwards on top stack A D with rightwards harpoon with barb upwards on top equals stack v space with rightwards harpoon with barb upwards on top rightwards double arrow stack D A with rightwards harpoon with barb upwards on top equals negative v with rightwards harpoon with barb upwards on top end style 

pertama, mencari  begin mathsize 14px style stack P D with rightwards harpoon with barb upwards on top end style yaitu

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kedua, mencari begin mathsize 14px style stack C P with rightwards harpoon with barb upwards on top end style , yaitu begin mathsize 14px style stack C B with rightwards harpoon with barb upwards on top end style sejajar dengan begin mathsize 14px style stack D A with rightwards harpoon with barb upwards on top end style, karena begin mathsize 14px style stack C B with rightwards harpoon with barb upwards on top equals stack D A with rightwards harpoon with barb upwards on top equals negative v with rightwards harpoon with barb upwards on top end style, sehingga

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell stack C P with rightwards harpoon with barb upwards on top end cell equals cell 1 half stack C A with rightwards harpoon with barb upwards on top end cell row blank equals cell 1 half open parentheses stack C B with rightwards harpoon with barb upwards on top plus stack B A with rightwards harpoon with barb upwards on top close parentheses end cell row blank equals cell 1 half open parentheses negative v with rightwards harpoon with barb upwards on top plus open parentheses negative u with rightwards harpoon with barb upwards on top close parentheses close parentheses end cell row blank equals cell negative 1 half v with rightwards harpoon with barb upwards on top minus 1 half u with rightwards harpoon with barb upwards on top end cell end table end style 

Maka begin mathsize 14px style stack A B with rightwards harpoon with barb upwards on top plus stack P D with rightwards harpoon with barb upwards on top times stack C P space with rightwards harpoon with barb upwards on top times stack A D with rightwards harpoon with barb upwards on top end style adalah 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell stack space A B with rightwards harpoon with barb upwards on top plus stack P D with rightwards harpoon with barb upwards on top times stack C P space with rightwards harpoon with barb upwards on top times stack A D with rightwards harpoon with barb upwards on top end cell row blank equals cell u with rightwards harpoon with barb upwards on top plus open parentheses negative 1 half u with rightwards harpoon with barb upwards on top plus 1 half v with rightwards harpoon with barb upwards on top close parentheses times open parentheses negative 1 half v with rightwards harpoon with barb upwards on top minus 1 half u with rightwards harpoon with barb upwards on top close parentheses. open parentheses v with rightwards harpoon with barb upwards on top close parentheses end cell row blank equals cell u with rightwards harpoon with barb upwards on top minus 1 fourth open parentheses v with rightwards harpoon with barb upwards on top plus u with rightwards harpoon with barb upwards on top close parentheses open parentheses v with rightwards harpoon with barb upwards on top minus u with rightwards harpoon with barb upwards on top close parentheses left parenthesis v with rightwards harpoon with barb upwards on top right parenthesis end cell row blank equals cell u with rightwards harpoon with barb upwards on top minus 1 fourth open parentheses stack v squared with rightwards harpoon with barb upwards on top minus stack u squared with rightwards harpoon with barb upwards on top close parentheses v with rightwards harpoon with barb upwards on top end cell row blank equals cell u with rightwards harpoon with barb upwards on top minus 1 fourth stack v cubed with rightwards harpoon with barb upwards on top plus 1 fourth stack u squared space with rightwards harpoon with barb upwards on top v with rightwards harpoon with barb upwards on top end cell end table end style 

 

 

 

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