1 ∼R ≡ S
2 $\lor$ T) ⊃ U
-Consider Assuming 'S' for Conditional Proof

question 60

Multiple Choice

1. ∼R ≡ S
2. T ⊃ R
3. ∼(R $\lor$ T) ⊃ U
-Consider assuming 'S' for conditional proof. Which of the following propositions is an immediate (one-step) consequence in PL of the given premises with that further assumption for conditional proof?

• A) R ≡ ∼S
• B) S ≡ R
• C) ∼S ≡ ∼ R
• D) S ≡ ∼R
• E) S ⊃ ∼R

---

Definitions:

Resting Potential

The difference in voltage across the neuronal membrane when the neuron is not actively sending a signal, typically around -70mV.

Membrane Potential

The electrical potential difference across a cell's plasma membrane, crucial for the transmission of nerve impulses and muscle contraction.

Millivolts

A unit of electric potential equal to one thousandth of a volt, commonly used in various fields such as physics and electrophysiology to measure small voltage differences.

All-Or-None

A principle stating that the strength of a response of a nerve or muscle fiber is not dependent on the strength of the stimulus; if a stimulus is above a certain threshold, a nerve or muscle fiber will fire with full strength.