Question 14 3 points How Did I Do? dy Find dx by implicit differentiation, given that xy - 7y7 = -1. Your answer could involve both x and y. Enclose numerators and denominators in parentheses. For example, (a - b)/ (1+n). dy dx 33 ab a 20 Va 18 a sin (a) ? Question 15 8 points How Did I Do? The equation implicitly defines u as a function of x. Find du dx || du dx 33 ab sin (a) 8. sin (4 u) == Show your work and explain, in your own words, how you arrived at your answer. Equation Editor 1= = AAT B I U S Styles Font Size Words: 0