Evaluate the Integral by Making the Given Substitution $$\int \cos 3 x d x , u = 3 x$$

question 23

Short Answer

Evaluate the integral by making the given substitution. $$\int \cos 3 x d x , u = 3 x$$

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Definitions:

Cross-Sectional Design

A research method that involves observing different subjects from different backgrounds or ages at one specific point in time to collect data.

Longitudinal Study

A longitudinal study is a research method that involves observing the same subjects over a period of time, sometimes spanning years or decades, to track changes or developments.

Age-Related Differences

Variations in cognitive, psychological, and physical aspects of individuals that can be attributed primarily to the aging process, affecting behaviors and capabilities.

Cross-Sectional Design

A research method that studies different population groups at a single point in time for comparative purposes.