MATLAB CODE IS NECESSARY

Problem 1 (modified from problem 6.33) The concentration of pollutant bacteria c in a lake decreases according to c = 77e-1.51 = + 20e-0.081 You need to determine the time required for the bacteria concentration to be reduced to 15. 1) Perform one iteration of manual calculation to determine t1 using the Newton-Raphson method with an initial guess of to=6 2) Perform one iteration of manual calculation to determine t1 using the modified secant methods with an initial guess of to=6 and 8=0.01. 3) Use function newtraph:m to determine the time required for the bacteria concentration to be reduced to 15 4) Use fzero 1) to determine the time required for the bacteria concentration to be reduced to 15