Final answer:
A 'global extrema calculator for multivariable functions' primarily assists in computing the absolute maximum and minimum values of multivariable functions.
Step-by-step explanation:
A 'global extrema calculator for multivariable functions' primarily assists in computing the absolute maximum and minimum values of multivariable functions. It helps identify these extreme points in a multivariable function by analyzing its critical points and the behavior of the function at these points.
By finding the global extrema, we can determine the highest and lowest values that the function can attain within a given range of inputs.