Question

Suatu fungsi f(x) 2x-1. f (- 1) = a dan f(a) = b. nilai a +b??.

Answer 1

F(x) = 2x - 1
f(-1) = (2 * -1) - 1
f(-1) = -2 - 1
f(-1) = -3 / a

f(-3) = (2 * -3) - 1
f(-3) = -6 - 1
f(-3) = -7 / b

nilai a + b =
nilai -3 + (-7) = 
nilai -3 - 7 = -10

Answer 2

F(x) = 2x-1 => fungsi

f(-1) = 2(-1)-1 = a
-2-1 = a
-3 = a

f(a) = 2a - 1 = b
2(-3) - 1 = b
-6-1 = b
-7 = b

Nilai a + b
= (-3) + (-7)
= (-10)

semoga membantu:)