This is the 2648th most frequent Spanish word.
eficaz
Effective; efficient.
The word 'eficaz' here is used as an adjective to describe the tool, indicating its capability to effectively solve problems.
Esta herramienta es muy eficaz para resolver problemas matemáticos.
This tool is very effective for solving mathematical problems.
In this sentence, 'eficaz' describes a person's skill or competency in a specific context, highlighting proficiency and achieving desired results.
Él demostró ser eficaz en la gestión del equipo.
He proved to be effective in managing the team.
Here, 'eficaz' modifies 'solution,' emphasizing its ability to achieve its intended goal successfully.