Clu 5. Cho him so y = - x^3 + 6 x^3 - 9 x + 2. Vi - Dicamon

Question

Clu 5. Cho him so  y = - x^3 + 6 x^3 - 9 x + 2. Vilt phuvigg trinh vilp tuyter uil ditm co nuing do  y = 2 x^2 + x^2 - x + 1. Ciu 6. Cho him so  y = 1, Vitt phu

Answer

.  y = 2 x^3 + x^2 - x + 1 = 1 ⇔ 22^3 + x^2 - x = 0  [  x = 1/2  x = - 1  .   y^' = 6 x^2 + 2 x - 1 ⇒ y^'( 0  ) = - 1 . ⇒( 0 , - 1  )  ⇒ pttt tug ofe  y = 1 : ⇒{ y - 1 = 4 ( x -

Answer

t a l ⟨} Vay  .  y = 2 x^1 + x^2 - x + 1   tace  y = 1   2 x^3 + x^2 - x + 1 = 1   2 x^3 + x^2 - x = 0   x ( 2 x^2 + x - 1  ) = 0   x ( 2 x - 1  ) ·( x + 1  ) = 0  . hodrs  x = -

y=2x^3+x^2-x+1