I need help answering chapter 7.

The f(x) is defined as follows: f(x) = 7 sin x middot e^-x - 1 The linear equations are defined as follows: 3x - 0.1y - 0.2 z = 7.85 0.1 x + 7y - 0.3z = -19.3 0.3x - 0.2y + 10z = 71.4 Use Matlab to apply graphic method to find a root for the f(x). Use Excel to apply bisection method to find a root for the f(x). Use Excel to apply Newton-Raphsen method to find a root for the f(x). Use Matlab to apply Newton-Raphson method to find a root for the f(x). Use Excel to apply Newton-Raphson method to find an optimal point for the f(x) indicating whether it is a max or a min