Gas turbine engines should be run at high rpm because
Expert's answer
For an aircraft to be propelled forward it requires a jet that is provided by gas turbine engines running at high rpm thus gas turbine engines should run at high rpm.
Finding a professional expert in "partial differential equations" in the advanced level is difficult.
You can find this expert in "Assignmentexpert.com" with confidence.
Exceptional experts! I appreciate your help. God bless you!