Derivative does not match result of the steps

[Michael Silva]

First off this is an awesome project. However when I entered 14+((367*t^2)/(t^2+100)) (modified slightly due to markdown) into http://gamma.sympy.org the derivative given is not the same as the results of the steps. The one shown in the steps appears to be correct and the other one incorrect to me.

Here's the derivative:

Here's the steps:

[Aaron Meurer]

They are equivalent. If you put the first one under a common denominator, you get the second one. The issue is that the first one uses diff, whereas the steps implement a separate differentiation algorithm, so they don't always agree.