Decide Whether the Integral Converges $\int _ { - 2 } ^ { + \infty } e ^ { - 0.5 x } \mathrm {~d} x$

Essay

Decide whether the integral converges. If the integral converges, compute its value.
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If the integral diverges, enter your answer as diverges .
​ $\int _ { - 2 } ^ { + \infty } e ^ { - 0.5 x } \mathrm {~d} x$