Examlex
Use Cramer's rule to find the solution of the system, if possible.
Prevalence
The total number of cases of a disorder occurring in a population over a specific period of time.
United States
A country located primarily in North America, comprised of 50 states, a federal district, five major self-governing territories, and various possessions.
Mania
A mental state characterized by extremely elevated mood, energy, and activity levels, often associated with bipolar disorder.
Neurotransmitter
Chemicals in the nervous system that transmit signals between neurons or from neurons to muscles.
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