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Tentukan nilai: x → ∞ lim ​ x ​ ( x − 4 ​ − x + 2 ​ )

Tentukan nilai:

 

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N. Puspita

Master Teacher

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Nilai .

Nilai Error converting from MathML to accessible text..

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Dengan sifat distributif, maka: Gunakan rumus: x → ∞ lim ​ a x 2 + b x + c ​ − p x 2 + q x + c ​ = L jika a = p , maka L = 2 a ​ b − q ​ jika a < p , maka L = − ∞ jika a > p , maka L = ∞ Karena a = p = 1 , maka: L ​ = = = = ​ 2 a b − q ​ 2 1 ​ − 4 − 2 ​ 2 − 6 ​ − 3 ​ Jadi, Nilai .

Dengan sifat distributif, maka:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell limit as straight x rightwards arrow infinity of square root of straight x left parenthesis square root of straight x minus 4 end root minus square root of straight x plus 2 end root right parenthesis end cell equals cell limit as straight x rightwards arrow infinity of left parenthesis square root of straight x left parenthesis straight x minus 4 right parenthesis end root minus square root of straight x left parenthesis straight x plus 2 right parenthesis end root right parenthesis end cell row blank equals cell limit as straight x rightwards arrow infinity of left parenthesis square root of straight x squared minus 4 x end root minus square root of straight x squared plus 2 x end root end cell row blank blank blank end table end style 

Gunakan rumus:

Karena , maka:

  

Jadi, Nilai Error converting from MathML to accessible text..

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