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Concavity Calculator

Find where a polynomial is concave up or concave down, identify possible inflection points, and see the complete second-derivative process instantly.

Enter the polynomial

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Enter coefficients for f(x). Decimal and negative values are supported.

Concavity result

02
CURRENT FUNCTION
f(x) = x³ − 3x² + 2
Second derivative6x − 6
Inflection points1

Step-by-step solution

Concavity formula

Concave up: f″(x) > 0    Concave down: f″(x) < 0.
A possible inflection point occurs where f″(x) = 0 and the sign of f″ changes across that x-value.

Frequently asked questions

What does concave up mean?

A function is concave up on an interval when its second derivative is positive. The graph bends upward like a cup.

What does concave down mean?

A function is concave down when its second derivative is negative. The graph bends downward like an upside-down cup.

Is every solution of f″(x)=0 an inflection point?

No. The concavity must actually change from one side of the point to the other.

Math Calculation Disclaimer

Results are estimates generated locally in your browser using standard mathematical formulas. They are for informational and educational purposes only and are not a substitute for verification in coursework, examinations or professional contexts requiring certified accuracy. VisionVix accepts no liability for decisions based on this tool's output.

Note: This calculator analyzes polynomial functions over the selected range. Results are numerical and intended for learning and verification.
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