In this case, we are asked to calculate D(f(2x)) where D denotes the second derivative of the function f at x. However, we are not provided with the function f(x).
Without knowing the function, it is impossible to compute the derivative. The derivative of a function at a point depends on the function and the chosen point itself.
The operation D(f(2x)) means we are supposed to compute the second derivative of the function at the point 2x. The variable x is provided to us; x equals 6 in this case. But, even with the value of x, we can't perform the operation D(f(2x)) without the function f(x).
This is because the derivative involves finding the rate at which the function's output is changing at that particular point, and we need the definition of the function itself in order to determine this.
Therefore, in the absence of the function f(x), the derivative D(f(2x)) cannot be computed. The solution in this scenario is to seek the function f(x) itself before examining its derivative at any point, including 2x. The second derivative D(f(2x)) when x equals 6 cannot be calculated without the function f(x).
In summary, we cannot continue with the calculation of D(f(2x)) unless the function f(x) is specified.