page388     Derivatives, 2. derivative and the inflection points of the Bell Curve      Matthias Lorentzen...mattegrisenforlag.com

Look at the picture beneath, then scroll down to the question and click the correct Answer button.

`(x^2 -1)e^{-{x^2}/2}`

×

Right answer

Close the window and click for the next page...

Close

• or

`(x-1)e^{-{x^2}/2}`

×

Wrong answer

Close the window and try once more...

Close

• Click here for the next page