Question 188279
For the exponential function e^x and logarithmic function log x, graphically show the effect if x is halved. 
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get the (free) software from www.padowan.dk.com/graph/
You can graph these and see the effects.
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What is the value of e?
From a calculator, it's
2.718281828459045....
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It's an infinite series,
1 + 1/1 + 1/2 + 1/3! + 1/4! + 1/5!....