Q1

Find f' (x) and find the equation of the line tangent to the graph of f at x = 1. f(x) = (2+ 5x)(6-5x) f'(x) = 5( - 10x + 4) y=Find f'(x) and find the equation of the line tangent to the graph of f at x = 1. x - 9 f(x) = 8x - 1 . . . 71 f' (x) = (8x - 1)2 The equation of the line tangent to the graph of f at x = 1 is y =dy dx Assume x and y are functions of t. Evaluate dt for 2xy - 4x + 3y = -21, with the conditions - = -9, x = 3, dt y= - 1. . . . dy dt (Type an exact answer in simplified form.)