Question

已知a+b=5,ab=3,求根号a分之b+根号b分之a的值

Answer 1

已知a+b=5,ab=3,
根号a分之b+根号b分之a的值
=√(b/a)+√(a/b)
=√（ab）/a+√ab/b
=[b√(ab)+a√(ab)]/(ab)
=5×√3/3
=5√3/3;