i have an exercise to do which asks the user to give 2 numbers x and y. OK i got that. then it needs to print the exponential value of e x, where e is the base of the natural logarithm.
up to now i have:
x=int(input('Please state the value of X: '))
y=int(input('Please state the value of Y: '))
print(math.log(x[,base]))
apparently it returns an error for invalid syntax of the comma separator prior to the word base.
is the coding correct or am i missing something?
math.log(x[,base])
is how it is written in the help docs to indicate that base is an optional argument. The default is e, so
math.log(x)
returns
ln(x)
.
From your description however it sounds like you are expected to return
e**x
, not
ln(x)
.
>>> import math
>>> math.exp(5)
148.4131591025766
>>> e = math.e
>>> e**5
148.41315910257657
>>>
thanks a lot for the quick reply. so if would like to present it it would be something like print('The answer is:',(e**5)) ??
That is unclear. If 'x' were the only variable and since 'e' is a constant, by your description, yes and there would be no need for the 'log' function.
>>> import math
>>>
>>> x = 5
>>> math.e ** x
148.41315910257657
>>>
However you have a second variable 'y', is that meant to be the 'base' and not 'e'?
y is not needed for this part of the equation. is needed for another question.
y is needed for the log of x on base y. this is my next question.