Mathematics IB: Tic Tac Toe

What is the optimal strategy in this game? Will the probability of winning drastically increase by some move? The mathematics method used in the analysis is permutations and combinations.

Mathematics IB: Newton’s Law of Cooling

Finding the function on the time taken until both tea and coffee is at the optimal temperature to drink in (65°C) or how accurate is mathematics/the newton law of cooling.

IB Mathematics IA HL

Using the Fourier series to model and compare the sounds of a violin and a guitar