Una población de bacterias crece de tal manera que la razón de crecimiento en el instante t (medido en horas) es igual a p'(t) = 90t + 500 / 1 + t
Si el tamaño de la población inicial es de 2000 bacterias. Encontrar el tamaño de la población al cabo de 3 horas.

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Two lines parallel to the same plane are parallel to eachother

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).