3. y'=1+cosx−ycotx;y()= -ycot.x:y()= {y= /3 2 sin r 1 cot x+=sin x}

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A: Please find the below attachment.Explanation:Step 1: Step 2: Step 3: Step 4:

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A: The formula is given below.Explanation:

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A: Determinant  = 56Explanation:

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