Question

please help me find c and d, I have already got help finding a and b but I dont understand how to find c and d

Answer 1

(c) The derivative of a function at a given point is the slope of the tangent line at that point. So, if you can’t draw a tangent line, there’s no derivative.

From the graph, we can determine the values of x that f'(x) is undefined to be:

`-3,\text{ -1, 3, 5}`

Answer: -3, -1, 3, 5

(d) The derivative of a function is zero when there is a horizontal tangent at that point.

From the graph, we can determine the values of x where f'(x) is zero to be:

`0,\text{ 2}`

Answer: 0, 2