Question
Consider the function defined by f(x) = re" + xe-* + 4:
(1) study f and draw its graph,
(2) determine the number and the sign of the solutions of the equation
f(r) = 0.
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Transcribed Image Text

Consider the function defined by f(x) = re" + xe-* + 4: (1) study f and draw its graph, (2) determine the number and the sign of the solutions of the equation f(r) = 0.

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