Determine Whether the Given Argument Is Valid or Invalid $\lor$

question 181

Essay

determine whether the given argument is valid or invalid. If it is valid, provide a derivation of the conclusion from the premises. If it is invalid, provide a counterexample.
-1. A ⊃ (B $\lor$ ∼C)
2. A ≡ (B $\lor$ C) / ∼B ⊃ ∼A

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Definitions:

Port

An interface through which external devices are connected to the computer.

Capacity

The ability or volume that something can contain or produce, often used in contexts like storage, processing power, or physical space.

Peripheral Device

A device such as a monitor, printer, or keyboard that connects to the system unit through a data port.

Expansion Bus

A collection of wires and protocols that allows for the expansion of a computer by adding plug-in cards, external devices, or other components.