[填空题]
A population of 40 rabbinh.h 5hvq *aynodo:, 7ts arerk jm496fp88v vs t zpx;3sll39 7shyub7/ bub brought to an island at the end of December, 2018. 9l4;7k /r 9vxtbhyu3f sbs3v78jbmpsplu8z6 The population, P, of rabbits on the island can be modelled by the logistic function
P(t)$\frac{M}{1+Ce^{-0.3t}}$=,wheret is the number of months that have passed since New Year Eve 2019.
After 12 months, the population of rabbits on the island is increased to 1423.
1.Find the value of M and the value of C. M ≈
2.Write down the largest population of rabbits that the island will ever be able to accommodate.
3.Hence calculate the number of months it takes for the population of rabbits to reach half of its largest population. t = months