diketahui lim a-5/x+4 =-2 x mendekati -1. nilai a adalah

lim x --> -1 (a - 5)/(x + 4) = -2

Masukkan nilai x = -1

(a - 5)/[(-1) + 4] = -2
(a - 5)/3 = -2
a - 5 = -2 × 3
a - 5 = -6
a = -6 + 5
a = -1