Question: 1. Explain how to determine whether a function is continuous or not at a particular x-value. 2. Let x 3 + 3y = 1. Find

1. Explain how to determine whether a function is continuous or not at a particular x-value.

2. Let x3 + 3y = 1. Find y' in two ways: by differentiating implicitly and by solving for y explicitly in terms of x. Which method do you prefer?

3. What is a critical number? Why are critical numbers useful? How can you easily find a critical number in a graph of a function?

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