# Use calculus to show that the graph of the quadratic function y = ax 2 + bx + c is concave upward if a is positive and concave downward if a is negative.

Use calculus to show that the graph of the quadratic function y = ax^{2} + bx + c is concave upward if a is positive and concave downward if a is negative.

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**Related Book For**

## Calculus For Business, Economics And The Social And Life Sciences

**ISBN:** 9780073532387

11th Brief Edition

**Authors:** Laurence Hoffmann, Gerald Bradley, David Sobecki, Michael Price

**Question Details**

Chapter #

**3**Section: Exercises 3.2

Problem: 70

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