Matlab 2015a programming. Coding and output needed. Graphs

QUESTION 2 [15 MARKS] a) Solve this system of three equations in three unknowns - x, y, and z: b) x + 2y + z = 2 2x + 3y +z = -1 5x - y-2z=-3 Define all unknowns as symbolic variables. [6 Marks) [CO2, PO4, C3] For the function 2x-x2-7x+2 do the following (define the unknown as symbolic variable): i. Plot the graph for the x-scale between - 15 and 15. ii. Find the indefinite integral of the function. Find the definite integral of the function from x = 4 to x = 10. iv. Find its derivative. Approximate the derivative in (iv) for x = 5. V. [6 Marks] [CO2, PO4, C3]