Students solve 31 questions on limits and derivatives to place 31 solutions into a standard 9x9 sudoku puzzle. The 31 questions include limits, infinite limits, and derivatives requiring power, product, chain and quotient rule, as well as simple trig derivatives. Students must understand that local minimum and maximum (extrema) are solved by setting the derivative to zero and solving for x, but 1st or 2nd derivative tests would not be required. Finding the x or y coordinate of the maximum or minimum are used in a few questions, otherwise many of the derivatives are solved and then a numerical solution to the derivative at a given value of x is the value to be placed in the sudoku.
This puzzle could be used as an assessment, with the sudoku portion of the problem solving as a bonus. It is also a good review of concepts before an assessment.
The puzzle and 31 questions are 3 pages long. The fully written out answers are 5 further pages.
See Making Math Matter MMM for other activities and applications of algebra, precalculus and calculus.