Question

ayúdenme con las preguntas
7, 11 y 15 ​

Answer 1

Respuesta:

2x^4 - x^2 = 1

f ( x ) 2x^4 = 8x^3

f ( x' ) 8x^3 = 24x^2

24x^2 - x^2 = 1

f ( x'' ) 24x^2 = 48x = 1

x = 1 / 48

x = 0.02083

48* 0.02083 = 1

1 = 1$y^4 - 2y^2 - 3 = 0\\f ( x ) y ^4 = 4y^3\\f ( x' )4 y^3 = 12y^2\\12y^2 - 2y^2 - 3 = 0\\10y^2 - 3 = 0\\f ( x '' ) 10y^2 = 20y\\20y -3 = 0\\20y = 0+3\\y = 3 / 20\\y = 0.15\\20* 0.15 - 3 = 0\\3 - 3 = 0\\\\\\11 ) x^4 - 2* x^2 - 11x^2 + 22x + 24 = 0\\f ( x ) x^4 = 4x^3\\f ( x' ) 4x^3 = 12x^2 - 2x^2 - 11x^2 + 22x + 24 = 0\\12x^2 - 2x^2 - 11x^2 + 22x + 24 = 0\\- x^2 + 22x + 24 = 0\\f ( x '' ) - x^2 = - 2x\\2x + 22x + 24 = 0\\24x = 0 -24\\x = - 24 / 24\\x = - 1\\- 24 + 24 = 0$