Differentiation and Integration of Trigonometric Functions is quite a challenging topic. The Additional Math question in the photo is one fine example.
a) Differentiate the trigonometric function using chain rule. Don’t forget the differentiate x2+2x inside the bracket.
b) You are required to integrate the product of two expressions . As there is NO product rule for Integration we use the answer for part a to indirectly find the answer.
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Additional Math Sec 3 , Sec 4 Tuition for students in Choa Chu Kang, Yew Tee, Yishun and Sembawang.