Pertanyaan

x → 4 lim 4 − x 2 + 7 9 − x 2

$x \to 4 lim \frac{9 - x ^{2}}{4 - x ^{2} + 7}$

E. Nur

Master Teacher

Mahasiswa/Alumni Institut Teknologi Sepuluh Nopember

Jawaban terverifikasi

Pembahasan

jadi hasilnya adalah .

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell limit as x rightwards arrow 4 of fraction numerator 9 minus x squared over denominator 4 minus square root of x squared plus 7 end root end fraction end cell equals cell fraction numerator 9 minus 4 squared over denominator 4 minus square root of 4 squared plus 7 end root end fraction end cell row blank equals cell fraction numerator negative 7 over denominator 4 minus square root of 23 end fraction end cell row blank equals cell fraction numerator negative 7 over denominator 4 minus square root of 23 end fraction cross times fraction numerator 4 plus square root of 23 over denominator 4 plus square root of 23 end fraction end cell row blank equals cell fraction numerator negative 7 open parentheses 4 plus square root of 23 close parentheses over denominator negative 7 end fraction end cell row blank equals cell 4 plus square root of 23 end cell end table end style$

jadi hasilnya adalah .