Use the total differential to approximate the change in 
as (x, y) varies from 
to 
.
Definitions:
Reform Movements
Organized efforts or campaigns aimed at bringing about changes in societal norms, laws, or institutions, often to address social injustices, corruption, or inequalities.
Mid 19th Century
Refers to the period around 1850, a time of significant industrial, social, and political changes globally.
Religion
A set of beliefs, practices, and moral codes related to the worship of a divine being or beings, and the spiritual aspects of life.
Reformers
Individuals or groups advocating for change in social, political, or economic practices to promote improvement.
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