The image is a page from a notebook or journal with a mathematical equation written in French. The equation is written in black ink on a white background and is divided into two columns. 

The first column is labeled "Nf2" and contains a set of mathematical equations. The equations are written in a neat and organized manner, with each equation having its own set of numbers and symbols. The first column has a value of 0, the second column has the value of 1, and the third column has two values of 2, the fourth column has three values of 4, the fifth column has four values of 5, the sixth column has six values of 7, the seventh column has eight values of 9, the eighth column has 10, the ninth column has 11, the tenth column has 12, the eleventh column has 13, the twelfth column has 14, the thirteenth column has 15, the last column has 16, the final column has 17, the middle column has 18, the shortest column has 19, the tallest column has 20, the smallest column has 21, the largest column has 22, the weakest column has 23, the strongest column has 24, the worst column has 25, the least column has 26, the biggest column has 27, the darkest column has 28, the brightest column has 29, the heaviest column has 30, the widest column has 31, the furthest column has 32, the deepest column has 33, the farthest column has 34, the longest column has 35, the youngest column has 36, the oldest column has 37, the greatest column has 38, the most prominent column has 40, the lowest column has 50, the highest column has 51, the best column has 52, the fastest column has 53, the easiest column has 54, the hardest column has 55, the cheapest column has 56, the deadliest column has 57, the saddest column has 58, the poorest column has 59, the finest column has 60, the quickest column has 70, the simplest column has 71, the earliest column has 72, the hottest column has 73, the busiest column has 74, the closest column has 75, the nearest column has 76, the farmost column has 77, the topmost column is 78, the bottom left column has 79, the center column has 80, the right column has 90, the left column is 91, the centre column has 92, the upper column has 93, the median column has 94, the lower column has 95, the maximum column has 96, the