How to differentiate & integrate functions step-by-step with Mathematica

Assign 4 functions to variables, a,b,f and g
Differentiate the function in Mathematica and Wolfram Alpha
Integrate one function
find the limit of a function.
Check out my other video with Maple here:

[JGKorny]

Good video, also the complicated example was very interesting

[ArfatXeon]

Helpful, thank you! Wish i had this back in high school