1 pt For the function y x35x262 ts yintercept is ts rinterc
(1 pt) For the function y = x3-5x2-62, ts y-intercept is ts r-intercepts are 1 when x oo, y When x -oo, y , X2 = and X3 with T1 2
Solution
given y =x^3 -5x^2 -6x
to find out y intercept :
plug x=0
then y = 0^3 -50^2 -6*0
y =0 is the y intecept
to find out x intercept
plug y=0
then we get x^3 -5x^2 -6x=0
x(x^2 -5x -6)=0
so x=0 or x^2 -5x-6=0
x^2 -6x+x-6=0
x(x-6)+1(x-6)=0
(x+1)(x-6)=0
so x=-1 or x=-6
x1=0 , x2= -1, x3=-6
when x tends to +infinite then y = + infinite
whe x tend to -infinite then y = -infinite
