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dy 21. Find- 23. Find -ify = 2e* +x 4x - 7 y = In Vx2 + 2x 24. Find the derivative of the function. k(x) = 5x 14 - 816 22. Find an equation of the tangent line to the curve x 6 y? - 3xy + 2x2 =4 at (3, 2). 25. f and g are functions whose graphs are given below. Let u(x) =f(x) . g(x) and v(x) = J(x) 8(x) 2+ y = /x) -2- " = (X) (a) Find u'(1). (b) Find u'(-1). (c) Find v'(-1) 26. If f(x) = e*g(x), and if g(0) = 3 and g'(0) = -2, findf'(0)