Apakah sudut n = 1-4x-x ^ 2?

Apakah sudut n = 1-4x-x ^ 2?
Anonim

Jawapan:

{-2,5}

Penjelasan:

# y = 1-4x-x ^ 2 #

# (d y) / (d x) = 0-4-2x = 0 #

# -4-2x = 0 #

# 2x = -4 ";" x = -4 / 2 = -2 #

# y = 1-4 (-2) - (- 2) ^ 2 #

# y = 1 + 8-4 #=5