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

question 277

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. D ⊃ (E • F)
2. D ≡ (E $\lor$ ∼F) / ∼E ⊃ ∼D

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Definitions:

Equilibrium Output

The level of output where the quantity of goods produced equals the quantity of goods consumed, resulting in market equilibrium.

Potential Output

The maximum amount of goods and services an economy can produce when it is most efficiently utilizing all its resources.

Actual Output

The real quantity of goods and services produced by an economy or firm at a given period, regardless of capacity.

Nominal GDP

The overall economic output of a country, consisting of all final goods and services produced in a defined period, assessed at prevailing market prices without correction for inflation.