Integral of sin(ax + b) cos(ax + b)

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In this video, we will learn to find integral of sin(ax + b) cos(ax + b). To simplify this integration, we will apply the substitution method. We will substitute sin(ax + b). You can even substitute cos(ax + b). Or you can apply the trigonometric identity sin 2x = 2 sin x cos x.

Other topics of the video are:
What is the integral of sin(ax + b) cos(ax + b)?
How to find the integral sin(ax + b) cos(ax + b)?
How to evaluate the integral sin(ax + b) cos(ax + b)?

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This is how I solved. Thank goodness I'm not the only one who though this solution.

Richa_cute