Why is a depreciation of the nations currency not feasible to eliminate a deficit if the natons demand and supply curves of foreign exchange are inelastic?

A depreciation of the nation's currency is intended to make exports cheaper and imports more expensive, theoretically boosting demand for domestic goods and reducing the trade deficit. However, if the demand and supply curves for foreign exchange are inelastic, it means that changes in currency value have little effect on the quantity of foreign exchange demanded or supplied. Consequently, even with a weaker currency, the expected increase in exports and decrease in imports may not materialize, leaving the deficit unchanged. Thus, the effectiveness of currency depreciation in addressing the deficit is significantly diminished under inelastic conditions.