Solve the Problem $$\sin 4 x = ( 4 \sin x \cos x ) \left( 1 - 2 \sin ^ { 2 } x \right)$$

question 212

Essay

Solve the problem.
- $$\sin 4 x = ( 4 \sin x \cos x ) \left( 1 - 2 \sin ^ { 2 } x \right)$$

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Definitions:

Reciprocity Principle

A social norm suggesting that people tend to respond to actions with similar actions, promoting mutual exchange and cooperation.

Compliance Principle

A psychological concept where individuals change their behavior due to explicit or implicit pressure from others, often to align with societal or group norms.

Donation

The act of giving something, often money or goods, to help a person, group, or organization.

Resisting Authority

The act of opposing or defying the instructions or control exerted by those in positions of power or command.