The definition of polynomial equation in one variable is the equation in the form
anxn an-1xn-1 an-2xn-2... A1x A0 = 0
when n is the number of positive integers. And the an an-1 An-2,,,,, A1...A0 real numbers, that is the coefficient of polynomial by the an ≠ 0 call this equation "polynomial equations are n"
example that 1 find the solution of the equation set. X3 - 2x2 - x 2 = 0
how to make f (x) = X3 - 2x2 - x 2
∴ f (1) = 1 - 2 - 1 2 = 0
∴ X - 1 as components of F (x)
.∴ = X2 - X - 2
X3 - 2x2 - x 2 = (x-1) (X2 - X - 2)
= (x-1) (X-2) (x 1)
X3 - 2x2 - x 2 = 0
(x-1) (X-2) (x 1) = 0
X. ,, = 1 2 - 1
∴ solution of the equation set is {,,} - 1 1 2
.
การแปล กรุณารอสักครู่..