Medical Definition of BIPOLAR DISORDER. : any of several mood disorders characterized usually by alternating episodes of depression and mania or by episodes of depression alternating with mild nonpsychotic excitementâcalled also bipolar affective disorder, bipolar illness, manic depression, manic-depressive illness, manic-depressive psychosis; ....efinition of BIPOLAR DISORDER. : any of several psychological disorders of mood characterized usually by alternating episodes of depression and mania âcalled also manic depression, manic-depressive illness.
Algebra is a powerful and rich branch of mathematics that is useful in everyday life as well as business, engineering, and other technical fields.
His introduction of the Indian concept of zero, along with the other nine digits, meant that mathematicians could express any number. Algebra was a method for moving terms from one side of an equation to the other to find the value of an unknown. He also described how to find the square root of a number, and was the first to demonstrate the concept of exponents for unknown variables.