http://www.allaboutcircuits.com/vol_3/chpt_8/11.html

I am inputting a 1.5 volt sine wave with a 1 kHz frequency. The time derivative is 1 kHz *1.5 cos with a 1 kHz frequency. That should be the output I should be receiving but instead I simply get an inverse and an amplification as my output of the same signal. A cosine is simply a sine wave with a 90 degree ( pi/2) phase shift.

Does someone know why I am not receiving the signal that I need?