How do you find the x coordinates of all points of inflection, final all discontinuities, and find the open intervals of concavity for #y=2x^2+4x+4#?
The graph is an upward opening parabola.
It has no points of inflection because it is concave up everywhere.
Since it is a polynomial, discontinuities are absent from it.
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To find the x-coordinates of points of inflection:
- Find the second derivative: .
- Set to find points of inflection: There are none for this function.
To find discontinuities:
- Solve the denominator of any fraction in the function to find discontinuities: There are none for this function.
To find open intervals of concavity:
- Find the second derivative: .
- Since for all , the function is concave up everywhere.
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To find the x-coordinates of all points of inflection, discontinuities, and open intervals of concavity for the function :
-
Points of Inflection:
Calculate the second derivative of the function, . . Set and solve for . Since the second derivative is constant and never equals zero, there are no points of inflection. -
Discontinuities:
There are no discontinuities in a polynomial function like . -
Concavity Intervals:
To determine the concavity of the function, examine the sign of the second derivative. Since for all , the function is concave up for all real numbers.
Therefore, there are no points of inflection, no discontinuities, and the function is concave up for all real numbers.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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