Take the first example in Figure 4: "Find the derivative of the function using the definition of a derivative. f(x) = (x**2-1) / (2*x-3)". The "solution" produced is to just use a symbolic math package's 'diff' function to find the derivative. I assume that the actual intent of the question is for the student to use the definition of a derivative: f'(x) = limit of (f(x+e)-f(x))/e as e goes to zero, to find the derivative of this function, by directly finding this limit.
The "answers" for other questions similarly miss the point. For example, convergence of a series is determined by just asking a symbolic math package whether it converges, not by any actual reasoning, as would be expected of a student. And the question asking for the Type I error probability of a statistical test is "solved" using a simulation program, whereas I expect a human student is expected to get the exact answer by analytical calculation.