The phrase "a complex task of" is correct and usable in written English.
It can be used when describing a task that involves multiple components or is difficult to accomplish.
Example: "Completing the project on time was a complex task of coordinating with various departments and managing resources effectively."
Alternatives: "a challenging task of" or "a difficult task of".
It was unclear whether she was starting a complex task of shuttle diplomacy or whether she expected to achieve a pause in the hostilities and then head home.
Thus, predicting the combination of these parallelism techniques, in order to reach optimal parallelism for given performance requirements, becomes a complex task of hardware implementation.
We examined the cognitive load associated with a simple and a complex task of learning paper-folding (origami) by observing 2D or stereoscopic 3D displays.
The construction of a sponge city is a complex task of systems engineering and requires the support of a high volume of data about the city's natural geography, social economy, water resources, and eco-environment.
Learning clinical thinking is a complex task of accumulating knowledge and experience [ 1- 3].
Assessing the homogeneity of overlapping gene trees is a complex task of itself [ 23, 77- 79] and is not covered in our study.
As a consequence, a variety of instruments sometimes makes it a complex task to interpret the results of trials.
However, the precise analysis of phenylpropanoids and flavonoids in plant tissues can be a complex task because of the variety of similar structures present in such molecule classes [12].
The correct resolution of this optimization problem is a complex task because of the high number of variables and the non-linearity in the performance of some of the system components.
It is a complex task because of the large number of factors affecting the demand.
Diagnosing chest pain in primary care is still a complex task because of the broad spectrum of causes, and it is important that a possible introduction of hs-troponin in primary care does not replace a comprehensive diagnostic approach.
