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Answered 2009-09-03 02:08:17

Concave up.

"Acceleration is increasing with time" tells us that the derivative of acceleration is positive. Since acceleration is the derivative of velocity, this means that the second derivative of velocity is positive. By definition, having a non-negative second derivative means that velocity is concave up.

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because it has increasing opportunity costs

If the opportunity cost is constant, the PPF is a straight line; when the opp. cost of a good rises when it is produced more, then concave.

a concave lens diverges the light ray travelling in a straight parallel path.

Many graphs that appear concave from one side will appear convex from the other. A smooth graph is generally described as concave if it is increasing AND if the rate of increase is also increasing. In terms of calculus this requires the first and second derivative to be positive. A concave polygon is one in which at least one of the vertices forms a reflex angle.

The Law of Increasing Opportunity Cost that is shown in a Production Possibilities Curve is concave to the origin. This is because it shows the maximum gain of two products used in production.

No, regular polygons are always convex and are shapes constructed using straight lines. concave polygons are irregular.

Formally, a polgon is concave if there is at least one pair of points in (or on) the polyhedron such that the straight line joining the two points is not wholly inside (or on) the polyhedron.In less formal terms, a concave polygon is one which has a bit going inwards.

I think it is niether * * * * * A heptagon is simply a plane shape bounded by seven straight sides. Any polygon with three of more sides can be concave or convex.

Because when one produces one product, the opportunity cost of the other product increases i.e. the concave represents the increasing opportunity cost with the production of a good.

Because when one produces one product, the opportunity cost of the other product increases i.e. the concave represents the increasing opportunity cost with the production of a good.

A concave m polygon is a 2-dimensional shape which is bounded by m straight sides with at least one internal angle that is a reflex angle (greater than 180 deg).

If a shape is said to be concave, it means that it is possible to have two points that to connect, need a straight line segment that must cross outside of the shape. An example would be a cross. Others include the following symbols: +, v, L, x, z, and many others. The opposite of concave is convex.

f(x)=(x^2)(e^x) 1. Domain? 2. Symmetry? 3. Intercepts? 4. Asymptotes? 5. Increasing/Decreasing? 6. Relative Extrema? 7. Concave Up/Down? 8. Points Of Inflection? 9. Any Discontinuity? So confused! The e throws me off!

The Star Trek logo, if made into straight lines, would be a concave quadrilateral. Simply draw a triangle. Now, at any point along the sides, make a new point and move it inward and it will be a concave quadrilateral.

Concave is a property of [irregular] polygons. A parallelogram cannot be concave.

no concave mirror is in shape of concave mirror

Concave, because you can connect the corners from the outside.

There are some meaning on the term " concave up". However, in most cases, a concave is a hallow curve. A half circle with an opening is also a concave. Concave up means to concave somethings.

continues in a straight line without refracting. or refracts parallel to the axis of the lens.

They diverge, as in they spread out in straight lines as opposed to coming together like in a magnifying (convex) lens.

His glasses have a concave lens.

No, a triangle can never be concave.

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