a. Find an equation of the tangent line at x = a b. Use a graphing utility to graph the curve and the tangent line on the same set of axes. y=x² - 4x² +5x-3; a=1 ... a. The equation of the tangent line at a = 1 is y=0 b. Choose the correct graph below. All graphs are shown in a [-3,3,1] by [-20,20,5] window. O A. OB. O C. Q Q Q OD.

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