Use Descartes' Rule of Signs to Determine the Possible Number

question 31

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive and negative zeros of f(x) = x⁵ + 2x.

• A)1 positive real;3 negative reals or 1 negative real
• B)no positive reals;no negative reals
• C)1 positive real;5 negative reals or 3 negative reals or 1 negative real
• D)5 positive reals or 3 positive reals or 1 positive real;no negative reals
• E)3 positive reals or 1 positive real;3 negative reals or 1 negative real

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Definitions:

Cognitive Development

the study of how thinking, problem solving, and intelligence evolve and change throughout the lifespan.

Age 7-11

Refers to the middle childhood period, characterized by the development of logical thinking, self-awareness, and increased independence.

Formal Operational Stage

The fourth and final stage of Jean Piaget's theory of cognitive development, where individuals develop the ability to think abstractly, logically, and systematically.

Cognitive Development

The study of how thinking, problem solving, and intelligence change as people grow from infancy through adulthood.