Find f'(x) for f(x) = sin(x)cos(x) → f'(x) = sin(x)cos(x)
→ f'(x) = -sin(x)cos(x)
→ f'(x) = sin²(x) + cos²(x)
→ f'(x) = cos²(x) - sin²(x)

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Which letters from the table represent like terms? a and b b and c a and d b and d

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 2x + 3y is less than negative 3 over 2 times x minus 4part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points)part b: is the point (â’4, 6) included in the solution area for the system? justify your answer mathematically. (4 points)