#KnowtheTruth: Why Knowing Who You Are Changes Everything

#KnowtheTruth: Why Knowing Who You Are Changes Everything

Matematika nilai Lim 2x^2+5x-3 / 6x^2-7x+2 adalah..
x=1/2
a. 7
b. 5
c. -3
d. -5
e. -7​

nilai Lim 2x^2+5x-3 / 6x^2-7x+2 adalah..
x=1/2
a. 7
b. 5
c. -3
d. -5
e. -7​

Jawab:

coba tes limit dulu dengan memasukkan nilai x

[tex]\frac{2(\frac{1}{2} )^{2}+5(\frac{1}{2})-3 }{6(\frac{1}{2} )^{2}-7(\frac{1}{2})+2}[/tex]

[tex]=\frac{0}{0}[/tex]

maka harus diturunkan utk mencari nilai limit (sesuai L'Hospitâl)

[tex]\lim_{x \to \frac{1}2} } \frac{2x^{2}+5x-3 }{6x^{2}-7x+2}[/tex]

[tex]= \lim_{x \to \frac{1}{2} }\frac{4x+5}{12x-7}[/tex]

[tex]=\frac{4(\frac{1}{2})+5 }{12(\frac{1}{2} )-7}[/tex]

[tex]=\frac{7}{-1}[/tex]

= -7

Penjelasan dengan langkah-langkah:

[tex]\lim_{x \to a} \frac{f(x)}{g(x)} = \lim_{x \to a} \frac{f'(x)}{g'(x)} = \lim_{x \to a} \frac{f''(x)}{g''(x)} = dst.[/tex]