Q:

Time for a Calculus Tag

We have several questions involving aspects of calculus:

Numerical Integration through Plotting
Symbolic Integration of Polynomials
Evaluate CDF of Student-t distribution
Do the Chain Rule
Gamma Function Golf
Symbolic Differentiation of Polynomials
Build the blancmange function
Help me with differential calculus!
Determine stability of a system using the Routh-Hurwitz stability criterion

We already have tags for number-theory, probability-theory, and various other sects of mathematics. I doubt that we won't have more calculus questions, so let's make a tag for the future.

A:

The tag calculus has been created. The 9 challenges linked in the question have been retagged to add this.
At least for starters, I've added the following information to the tag wiki.
Description:

Use this tag for challenges involving integration or differentiation of functions.

Wiki:

Calculus, not to be confused with lambda calculus, is the mathematical study of change. The main branches are differential calculus, which involves taking derivatives of functions, and integral calculus, which involves integrating functions.
This tag should be used for any challenge which requires numerically or symbolically differentiating or integrating functions.

We should be vigilant in making sure that challenge authors do not confuse calculus with lambda-calculus, as they are entirely separate.

