Diagram of simple filtration: oversize particles in the feed cannot pass through the lattice structure of the filter, while fluid and small particles pass through, becoming filtrate.
An odd function can be identified by replacing both the x and y values with -x and -y values. If the values in your equation are the opposite (positives are negatives and negatives are positives), then the function is odd. Take, for example, this equation y = x^2.
The definition of odd is given by 2n+1, where n is an integer. So if n=0: 2(0)+1 = 0 + 1 = 1 When n is 0, you get the first smallest positive integer, therefore when n is 45 you'd actually get the 46th smallest positive real integer. Therefore, the 45th smallest positive odd number is given by: 2(45-1)+1 = 2(44)+1 = 88 + 1 = 89 Note: the -1 represents offsetting the numbers, because we begin counting at zero. The answer is 89. Anand Mehta