lim→0√x²-3x+1 - √ x²-4x+1 per 2x
Matematika
sidiq099292
Pertanyaan
lim→0√x²-3x+1 - √ x²-4x+1 per 2x
1 Jawaban
-
1. Jawaban Bobb123
[tex] = \frac{ \sqrt{ {x}^{2} - 3x + 1 } - \sqrt{ {x}^{2} - 4x + 1} }{2x} \times \frac{ \sqrt{ {x}^{2} - 3x + 1 } + \sqrt{ {x}^{2} - 4x + 1} }{ \sqrt{ {x }^{2} - 3x + 1} + \sqrt{ {x}^{2} - 4x + 1 } } \\ = \frac{( {x}^{2} - 3x + 1) - ( {x}^{2} - 4x + 1) }{2x \times ( \sqrt{ {x}^{2} - 3x + 1 } + \sqrt{ {x}^{2} - 4x + 1)} } \\ = \frac{x}{2x} \times \frac{1}{ \sqrt{1} + \sqrt{1} } \\ = \frac{1}{2} \times \frac{1}{2} \\ = \frac{1}{4} [/tex]