How do you solve for x in #rx=8=e#?

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Answer 1 · 2016-07-26T15:26:20

Is this question correct?

#e# is normally used as a reserved constant and is of value

#2.71818....# It is one of the 'Irrational numbers'

So as the constant #e=2.71818..# it is not correct to write #8=e#

#e# is so important that it is even used as a logarithmic base normally written as 'ln'

So in the same way you could have log(10) you can have ln(10)

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(red)("Assumption: The question is wrong")#

Suppose the question should read as:#color(brown)(" " rx=8)#

Then divide both sides by # color(blue)( r)# giving:

#" "color(brown)(r/(color(blue)(r))xx x=8/(color(blue)(r)))#

But #r/r=1# giving:

#" "x=8/r#