1. Consider the function -0.4x f(x) = 0.2+ e cos(2x+4) a) The equation f(x) = 0...

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1. Consider the function -0.4x f(x) = 0.2+ e cos(2x+4) a) The equation f(x) = 0 has two solutions in the interval (-6,-2). Use a MATLAB built key function to find these two solutions. Show your MATLAB code and the final answers. b))f(x) has a local minimum in the interval (-8, -6). Find the x-value of the minimum. Show your MATLAB code and the final answer. c)) f(x) has a local maximum in the interval (-6,-4). Find the x-value of the maximum. Show your MATLAB code and the final answer. 1. Consider the function -0.4x f(x) = 0.2+ e cos(2x+4) a) The equation f(x) = 0 has two solutions in the interval (-6,-2). Use a MATLAB built key function to find these two solutions. Show your MATLAB code and the final answers. b))f(x) has a local minimum in the interval (-8, -6). Find the x-value of the minimum. Show your MATLAB code and the final answer. c)) f(x) has a local maximum in the interval (-6,-4). Find the x-value of the maximum. Show your MATLAB code and the final answer.