6. [-/10 Points] DETAILS 0/30 Submissions Used Calculate dy. You need not expand your answer. dx y = x2+ 5x - 1 x2 + 4x - 1 dy dx Need Help? Read It Watch It Submit Answer 7. [-/10 Points] DETAILS 0/30 Submissions Used Consider the following function. s ( x ) = (a) Calculate the derivative of the given function without using either the product or quotient rule. s' ( x ) = (b) Use the product or quotient rule to find the derivative. Check that you obtain the same answer. s' ( x ) = Need Help? Read It Submit Answer [-/10 Points] DETAILS