diketahui fungsi f(x) = 2x²-2x-12. nilai dari f(1/2) adalah

Question

Matematika Diposting : 2017-04-11 Diupdate : 2022-03-22 herlindwinanda

Pertanyaan

diketahui fungsi f(x) = 2x²-2x-12.
nilai dari f(1/2) adalah

Answer 1

f(x) = 2x² - 2x - 12
f(1/2) = 2(1/2)² - 2(1/2) - 12
= 2(1/4) - 2(1/2) - 12
= 1/2 - 1 - 12
= 1/2 - 13
= (1 - 26) / 2
= -25/2
= -12 1/2

Answer 2

f (x) = 2x² - 2x - 12

Nilai f (1/2)
= 2 (1/2)² - 2 (1/2) - 12
= 2 (1/4) - 1 - 12
= 1/2 - 13
= 1/2 - 26/2
= -25/2
= -12 1/2