Use the information below to sketch the function.
There is a horizontal asymptote at f (x)=1
The denominator of the function is x^2 + x - 6
There is a y intercept at 0.
f(-2)=f(-4)=0
f(4)=f(1)=f(2.5)=1
(all of the < > are less then and greater then no less then/greater the or equal to)
f(x) < 0 when - 4 < x < -3, - 2 < x < 0
f(x) > 0 when x < -4, -3 < x < -2, 0 < x < 2, x>2
There is a horizontal asymptote at f (x)=1
The denominator of the function is x^2 + x - 6
There is a y intercept at 0.
f(-2)=f(-4)=0
f(4)=f(1)=f(2.5)=1
(all of the < > are less then and greater then no less then/greater the or equal to)
f(x) < 0 when - 4 < x < -3, - 2 < x < 0
f(x) > 0 when x < -4, -3 < x < -2, 0 < x < 2, x>2
Answers
Answered by
oobleck
There is a horizontal asymptote at f(x)=1
means that the degree of the numerator and denominator are the same, and the ratio of their leading coefficients is 1. That is, both are of the form
(x-a)(x-b)... with all the coefficients just 1
The denominator of the function is x^2 + x - 6 = (x-2)(x+3)
There is a y intercept at 0.
means that f(x) is of the form x^n/((x-2)(x+3))
so now were at the spot where it looks like
y = x^2/((x-2)(x+3))
Now we start getting into murky waters.
0 < x < 2, x>2
means that f(x) has a double root at x=2, so we need
y = x(x-2)^2/((x-2)(x+3))
But now we need a cubic polynomial in the bottom, but you said it was just x^2+x-6.
And the rest of the constraints make even more changes necessary. I suspect you have mangled the question somehow.
means that the degree of the numerator and denominator are the same, and the ratio of their leading coefficients is 1. That is, both are of the form
(x-a)(x-b)... with all the coefficients just 1
The denominator of the function is x^2 + x - 6 = (x-2)(x+3)
There is a y intercept at 0.
means that f(x) is of the form x^n/((x-2)(x+3))
so now were at the spot where it looks like
y = x^2/((x-2)(x+3))
Now we start getting into murky waters.
0 < x < 2, x>2
means that f(x) has a double root at x=2, so we need
y = x(x-2)^2/((x-2)(x+3))
But now we need a cubic polynomial in the bottom, but you said it was just x^2+x-6.
And the rest of the constraints make even more changes necessary. I suspect you have mangled the question somehow.
Answered by
plz help me with my hard homework question
Nope I just checked. I made no typos.