Which of the following would be best to use for population growth with known upper limit?
Correct Answer: B.√x.
It’s commonly known that logarithmic growth and s-curves can be used to represent populations, but these aren’t the only functions. In our question we have two key features, population growth and an upper limit. We can quickly rule out choice D and E. They will not cap out, in fact they will grow even faster never reaching an upper limit. Choice C is the negative absolute value. This is not growing but decreasing. The cosine is also bounded by a certain amplitude, in this case it has an amplitude of 1. It is possible to use this function to model a bounded population, but the cosine function is a periodic function. This means there are places where the function grows and there are places where the function decreases. The square root, on the other hand, is always growing even when it reaches its upper limit. This makes the square root function, choice B, the correct answer.
The Dental Admission Test (DAT) is a test administered by the American Dental Association (ADA). The test is four hours and 30 minutes long and contains four sections. The test is designed to assess your knowledge in: biology, chemistry, organic chemistry, perceptual ability, reading comprehension, and basic math.
How Should I Study?
The DAT is the final challenge before you apply to dental school and should not be taken lightly. Depending on the strength of your scientific knowledge, your study schedule should be between 4 to 10 weeks. Here's a link to my definitive DAT study guide and schedule which will help you prepare.
Register for the DAT.
You should plan on taking the DAT late spring or during the summer of your application year. For example, the class of 2020 should take the DAT in the spring or summer of 2015. You can begin the registration process for the DAT at the ADA's website. Be sure to apply for a test date early as the registration process may take some time.