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This question is about "What is the value of "e" raised to infinity and minus infinity?.
We should undersand it that any number greater than positive unity raised to the power infinity gives infinity value. i.e. if x>1, then x^infinity=infinity. And we know e=2.718281828…. Hence e^infinity=infinity.
When e is raised to power infinity, it means e is increasing at a very high rate and therefore it is tending towards a very large number and we can say that e raised to the power infinity is infinity. When e is raised to the power negetive infinity, it tends towards a very small number and hence tends to zero. And when x tends to -infinity i.e. e^-infinity = 0