Find the derivative 8t dt a. by evaluating the integral and differentiating the result. b. by differentiating the integral directly 7 a. Evaluate the definite integral COS X Simplify your answer. Use integers or fractions for any numbers in the expression.) Find the derivative of the evaluated integral 8t' dt= 7 dx Simplify your answer. Use integers or fractions for any numbers in the expression.) b. Which of the following is the correct way to find the differentiation of the given integral directly? 0 A. Use the Fundamental Theorem of Calculus, Part 1, with cosx as lower limit and 1 as upper limit, and then use the chain rule of differentiation O B. Use the Fundamental Theorem of Calculus, Part 1, with 1 as lower limit and cosx as upper limit, and then use the product rule of differentiation ° C. Use the Fundamental Theorem of Calculus, Part 1, with cosx as lower limit and 1 as upper limit, and then use the product rule of differentiation 0 D. Use the Fundamental Theorem of Calculus, Part 1, with 1 as lower limit and cosx as upper limit, and then use the chain rule of differentiation 7 Therefore, dx Simplify your answer. Use integers or fractions for any numbers in the expression.)
