Brightstorm is like having a personal tutor for every subject

See what all the buzz is about

Check it out

Finding an Inverse Algebraically - Problem 10 255 views

Any time we're asked to find the inverse of a function, we need to switch x and y and then solve for y. When asked to find the inverse of a log function in particular, we'll be needing to re-write the function in exponential form using the definition of logs. You must be extremely careful when you're re-arranging the quantities to make sure everything ends up in the right place. "ln," or the natural log, can be thought of as log base "e." Don't forget to check your work using compositions, making sure that f(f-1(x)) = f-1(f(x) = x .

Transcript Coming Soon!