Which of the following is true? cos(x) + cos(7x) ® s Ssin(4x)cos(3x)dx = [s A 2 B) All of the above © Jcos(3x)cos(4x)dx = [ cos(x) + cos(7x) © Ssn(3x)cos(4x)dk = Ssin(7x) =si * sin(7x) – sin(x) dx 2 ® Jsin(3x)sin(4x)dx = [ cos(x) – cos(7x),

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A: To find out the integration.

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A: answer is in next step

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A: fx=2x+3,x&lt;15,x≥1

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A: On solving this we will get

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A: Follow the procedure given below.