سوال ۳۰ کنکور ارشد علوم کامپیوتر ۱۳۹۷

PASSAGE 3 (excerpt):

"Functional analysis is the study of vector spaces resulting from a merging of geometry, linear algebra, and analysis. It serves as a basis for aspects of several important branches of applied mathematics including Fourier series, integral and differential equations, numerical analysis, and any field where linearity plays a key role."

Q30. Geometry ---------- functional analysis.

1. plays no important role in
2. is, in principle, the same as
3. is served as a tool to diversify
4. along with linear algebra and analysis are the main ingredients of