canela.sh

#!/bin/bash
# e^x = 1 + x + x^2/2! + x^3/3! + x^4/4! + ...x^n/n!

t=1.0
s=1.0
x=0
n=0

echo "Digite o valor para X (e^x): "
read -r x
echo "Digite o valor de precisao (sequencias que serao feitas): "
read -r n

for (( i=1; i<=$n; i++ ))
do
t1=$(echo "$t/$i" | bc -l)
t=$(echo "$t1*$x" | bc -l)
s=$(echo "$s+$t"  | bc -l)
done

echo "$s" | bc -l