Verify That the Equation Is an Identity $$\sec ^ { 2 } \frac { u } { 2 } = \frac { 2 \sec u } { \sec u + 1 }$$

question 190

Essay

Verify that the equation is an identity.
- $$\sec ^ { 2 } \frac { u } { 2 } = \frac { 2 \sec u } { \sec u + 1 }$$

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Definitions:

Class Systems

Social stratification based on both social and economic status, which often determines access to resources, opportunities, and privileges within a society.

Caste Systems

A form of social stratification characterized by hereditary transmission of a lifestyle, occupation, and social status, with little to no mobility.

Stratification

The division of society into classes that have unequal access to resources and power.

Simplicity Movement

A lifestyle choice emphasizing minimalism and reducing one's footprint by consuming less and living with essentials.