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Hi guys i am in precalc but i am having trouble solving an equation like e^ (1+lnx)
your earliest response is appreciated...
please help!!!!

2007-06-19 08:57:12 · 8 answers · asked by Anonymous in Science & Mathematics Mathematics

8 answers

You need to know that e^(a+b) = (e^a)*(e^b).

So...
e^(1+lnx) =
e^1 * e^lnx

Then you need to know that e and ln are inverse functions, so e^lnx = x:

e^1 * e^lnx =
e * x

2007-06-19 09:00:01 · answer #1 · answered by McFate 7 · 1 1

It is not an equation - no equal sign. You can simplify it:
e^(1+lnx)=e^1 * e^lnx = ex

2007-06-19 09:01:02 · answer #2 · answered by Anonymous · 0 0

This can be simplified down to:

(e^1)*(e^lnx)

because you add exponents when you multiply. This can be simplified further:

(e^1)*x

because e^lnx = x

2007-06-19 09:01:58 · answer #3 · answered by Math Stud 3 · 0 0

break it into a series equivalent.

or break it into its components.

if i remember e^(a+b) = e^a * e^b
which would make this

(e^1) * (e^lnx)
e^1 = e

e^lnx = x (i believe)

which would make this x*e

lemme know
jean_has_Cats@yahoo.com

2007-06-19 09:01:28 · answer #4 · answered by jean_has_cats 2 · 0 0

This is not an equation. This is an expression to be simplified.

e^(1 + ln x)

= (e^1)( e^(ln x)) because a^(m + n) = (a^m)(a^n)

= (e)(x) because a^1 = a and e^(ln a) = a.

Answer: ex or xe (the product of x e and x)

2007-06-19 09:20:22 · answer #5 · answered by mathjoe 3 · 0 0

Remember that the function's domain is restricted!!!!! For all x>0, it is the function f(x) = e*x, as the previous posts said. But for x<0, the function becomes imaginary.

2007-06-19 09:04:07 · answer #6 · answered by J Z 4 · 0 0

review your exponent rules


e^(a+b) = e^a*e^b

so e^(1+lnx) = e^1*e^lnx = e*x

2007-06-19 09:00:16 · answer #7 · answered by Anonymous · 0 0

You can use your exponential rules:
e * e^lnx => e * x

2007-06-19 09:00:28 · answer #8 · answered by sharky.mark 4 · 0 0

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