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Let where and are constants. 6-29 HW eTool (Desmos). Homework Help ✎

  1. For what value(s) of is the graph non-differentiable, regardless of the values of and ? Explain what happens to the graph at these points.

    has a cusp within the domain of one of the pieces. Where is it?

  2. Determine the values of a and such that the graph is both continuous and differentiable at .

    Write a system of equations: [piece 1 of f(x)] = [piece 2 of f(x)], evaluated at . [piece 1 of f '(x)] = [piece 2 of f '(x)], evaluated at .
    Use algebra to solve for and .

Use the eTool below to visualize the problem.
Click the link at right for the full version of the eTool: Calc 6-29 HW eTool