Show that p(x)=2x3−5x2−10x+5 has a real root.
1 answer:
Let's pick an arbitrary value of 5.
Let's pick another arbitrary value: 1
Between these two values, the polynomial is continuous. This means for the two polynomial points to be satisfied, there must be at least one root between these two points.
We can either use the Intermediate Value Theorem or Newton's method to make a better approximation from there.
Let's pick another arbitrary value: 1
Between these two values, the polynomial is continuous. This means for the two polynomial points to be satisfied, there must be at least one root between these two points.
We can either use the Intermediate Value Theorem or Newton's method to make a better approximation from there.
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Answer:
D) ,
Step-by-step explanation:
The blue boundary line has a y-intercept of 2 and a slope of 2.
It has equation :
Since the boundary line is not solid and the lower half plane of this line is shaded, its inequality is
The blue boundary line passes through the origin and has slope .
Its equation is
Since the boundary line is not solid and the right half-plane is shaded, its inequality is
The correct choice is D.