Monday

January 26, 2015

January 26, 2015

Posted by **phyllys** on Sunday, December 30, 2012 at 8:10pm.

f(x)=3+lnx

- Pre-Cal. -
**Reiny**, Sunday, December 30, 2012 at 10:45pmy = 3 + lnx

first step in finding the inverse is to interchange the x and y variables, so

inverse is

x = 3 + lny

x-3 = lny

y = e^(x-3)

in original y = 3 + lnx

domain , x > 0 , y is any real number

so in the inverse these two would be interchanged.

remember , when graphing an inverse of a function, you get a reflection in the line y = x

check:

in original, let x = 5

y = 3+ln5 = 4.6094... (I stored it in memory)

in inverse:

x = 4.6094

y = e^(1.6094) = 5

Yeahh

**Answer this Question**

**Related Questions**

pre calculus - Find the inverse of the following function. Find the domain, ...

calculus - Find the inverse of the following function. Find the domain, range, ...

college algebra - Find the inverse of the following function. Find the domain, ...

algebra - Find the inverse of the following function. Find the domain, range, ...

Pre-Cal. - find the domain, range and the asymptote(s), of each function on the ...

pre calculus - Find the inverse of the function below. Graph the function below ...

pre-cal: graphs of functions- fill in the blank - To find the domain of a ...

College Algebra - Find the inverse of the function below. Graph the function ...

algebra - 1 (a) A function passes through the points (0, -5), (1, 0), (2, 7). ...

precalculus - Find the inverse of the function below. Graph the function below ...