10. [-/2 Points] DETAILS SCALCCC4 3.3.027. MY NOTES ASK YOUR TEACHER If H(0) = 0 cos 0, find H'(0) and H"(0). H'(0) = H" (0 ) = Need Help? Watch It Show My Work (Optional) ? 11. [0/1 Points] DETAILS PREVIOUS ANSWERS SCALCCC4 3.3.031. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER For what values of x does the graph of f have a horizontal tangent? (Use n as your integer variable. En separated list.) f ( x) = x - 2 sin(x) X = 3 V3 X Need Help? Watch It Show My Work (Optional) ? 12. [0/1 Points] DETAILS PREVIOUS ANSWERS SCALCCC4 3.3.039. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the given derivative by finding the first few derivatives and observing the pattern that occur d91 dy91 (sin x) 90 (x cos (x) - 91 sin (x) ) X -92