10. [0/2 Points] PREVIOUS ANSWERS Find the tangent line to the curve (x y)2 = xy 1 at the given point. (a) (2. 5) 11 T (x 7 2) X (b) (2, 1) 1 x 2) X Recall that to nd % for a relation between two variables x and y, first differentiate both sides with respect to x, then solve for %. This process is known as implicit differentiation. Which differentiation rules are necessary for each term in the given relation? Are there any products, quotients, or compositions? What is the slope of the tangent line at the given point? Submit Answer 7. [0/1 Points] PREVIOUS ANSWERS PRACI'ICE ANOTHER Find all values ofx in the interval [0, 271] where f(x) = 7 sin(x) 7 cos(x) has a horizontal tangent line. (Enter your answers as a commaseparated list' If an answer does not exist, enter DNE.) X: DNE X Recall that the slope of the tangent line to a function f(x) at x : a is given by f'(a), the value of the derivative evaluated at x : a. What is the slope of a horizontal line? What is %(sin(x))? What - d Is E(cos(x))? Submit