Find all values of x (if any) where the tangent line to the graph of the given equation is horizontal. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) y = x - e4x - 2 DNE

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A: As per the guidelines I can solve only first question

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A: We can solve this as follows:

Q: 3. Find the point(s) on the graph of the curve fle)-+3+ where the tangent is horizontal.

A: To find the points on the graph of the curve fx=x33+3x+4x, where the tangent is horizontal.

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Q: INTEGRATION BY PARTS Use this formula: udv = uv vdu mx тх cos nx

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A: Solution is given below:

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