Use the difference quotient to find the derivative of square root

The video tutorial explains the concept of the difference quotient and its application in finding local linearity as h approaches 0. It covers the process of rationalizing radicals in limits and demonstrates function substitution with various inputs. The tutorial concludes with a final calculation of the slope using the derived formula.

What is the significance of the difference quotient as h approaches 0?

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What does the expression 'f of x plus h' represent in the context of the discussion?

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Describe the process of finding the slope between two points on a graph as h approaches 0.

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Explain how to rationalize the radical in the limit expression given in the text.

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How does substituting h with 0 affect the limit expression discussed in the text?

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