Nilai Dari lim x mendekati tak hingga

Mapel : Matematika
Kelas : XI SMA
Bab : Limit

Pembahasan :
Lim [x » ~] √(8x² + 5x) - √(8x² - 7x)

Karena a = p = 8
Maka hasilnya...
= (b - q)/2√a
= (5 + 7)/2√8
= 12/2√8
= 6/(2√2)
= 3/√2
= 3/2 √2

Jawaban : D

[tex]\displaystyle \lim_{x\to\infty}\sqrt{8x^2+5x}-\sqrt{8x^2-7x}=l\\\\l=\frac{b-q}{2\sqrt{a}}\\l=\frac{5-(-7)}{2\sqrt{8}}\\l=\frac{12}{4\sqrt{2}}\\l=\frac{3}{\sqrt{2}}\\\boxed{\boxed{l=\frac{3}{2}\sqrt{2}}}[/tex]