Use Descartes's Rule of Signs to Determine the Possible Number $$f ( x ) = - 7 x ^ { 9 } + x ^ { 7 } - x ^ { 2 } + 3$$

question 93

Multiple Choice

Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given
function.
- $$f ( x ) = - 7 x ^ { 9 } + x ^ { 7 } - x ^ { 2 } + 3$$

• A) 3 or 1 positive zeros, 2 or 0 negative zeros
• B) 3 or 1 positive zeros, 3 or 1 negative zeros
• C) 2 or 0 positive zeros, 2 or 0 negative zeros
• D) 2 or 0 positive zeros, 3 or 1 negative zeros

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Definitions:

Spinal Nerves

Nerves that emerge from the spinal cord, responsible for transmitting motor, sensory, and autonomic signals between the spinal cord and the body.

Homeostasis

The tendency of a biological system to maintain stable internal conditions despite external changes.

Nissl Bodies

Nissl bodies are stacks of rough endoplasmic reticulum found in neurons, essential for the synthesis of neurotransmitter proteins.

Axons

Long, slender projections of nerve cells which conduct electrical impulses away from the neuron's cell body.